As filed with the Securities and Exchange Commission on March 21, 1997

Registration No. 333-_________

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933


MISONIX, INC.
(Exact name of registrant as specified in its charter)

    New York                                  11-2148932
(State or other jurisdiction of           (I.R.S. Employer Identification No.)
incorporation or organization)


1938 New Highway, Farmingdale, New York               11747
(Address of Principal Executive Offices)           (Zip Code)

1996 EMPLOYEE INCENTIVE STOCK OPTION PLAN
1996 NON-EMPLOYEE DIRECTOR STOCK OPTION PLAN
(Full Title of the Plan)

Joseph Librizzi, President
MISONIX, INC.
1938 New Highway
Farmingdale, New York 11735
(Name and address of agent for service)

(516) 694-9555
(Telephone number, including area code, of agent for service)


Copy to:
Edward I. Tishelman, Esq.
Hartman & Craven LLP
460 Park Avenue
New York, New York 10022

CALCULATION OF REGISTRATION FEE

                                                                      Proposed          Proposed
                                                                       maximum           maximum        Amount of
                  Title of                        Amount to be     offering price       aggregate     registration
         securities to be registered               registered        per unit(1)    offering price(1)      fee
         ---------------------------            ---------------    --------------   ----------------- -------------
Common Stock, par value $.01 per share .......  1,050,000 shares        $8.13      $4,798,830.00      $1,454.20
============================================    =================  =============== ================== =============

(1) Based on a per share exercise price of (i) $1.10 for 519,000 shares;
(ii) $6.00 for 50,000 shares; and (iii) $9.00 for 20,000 shares. The balance of the shares are exercisable at $8.13 per share, which price is estimated solely for the purpose of calculating the registration fee in accordance with Rule 457(c) and (h) under the Securities Act of 1933, as amended. The $8.13 price per share is estimated based on the average of the high and low bid prices for MISONIX, INC.'s Common Stock on March 18, 1997, as reported by the National Association of Securities Dealers' Automated Quotation System.


EXPLANATORY NOTE

The Form S-8 Reoffer Prospectus may be utilized for reofferings of Common Stock acquired by certain directors of the Company through participation in the 1996 Non-Employee Director Stock Option Plan.


REOFFER PROSPECTUS

MISONIX, INC.

509,000 SHARES
COMMON STOCK

This Prospectus relates to the offer and sale of 509,000 shares (the "Shares") of common stock, $.01 par value per share (the "Common Stock"), of MISONIX, INC. (the "Company" or "Registrant"), issued to certain shareholders of the Company (the "Selling Shareholders") pursuant to grants made under the Company's 1996 Non-Employee Director Stock Option Plan (the "Directors' Plan"). Such Shares may be offered and sold, from time to time, on the over-the-counter market or such other national securities exchange upon which the Common Stock is traded at the time of such sales, at prices prevailing at the time of such sales, or in negotiated transactions. The Company will not receive any proceeds from the sale of the Shares. See "Plan of Distribution."

The Common Stock of the Company is quoted on the NASDAQ Small-Cap Market system ("NASDAQ") and on the Boston Stock Exchange ("BSE") under the symbols "MSON" for NASDAQ and "MSO" on the BSE. On March 18, 1997, the reported closing sale price of the Shares on NASDAQ was $8 1/8.

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


No person has been authorized to give any information or make any representation other than is contained in this Prospectus, and, if given or made, such information or representation must not be relied upon as having been authorized by the Company or any Selling Stockholder. This Prospectus does not constitute an offer to sell or a solicitation of an offer to buy any security offered hereby in any jurisdiction to any person to whom it is unlawful to make such offer or solicitation in such jurisdiction. Neither the delivery of this Prospectus nor any sale made hereunder shall, under any circumstances, create any implication that there has been no change in the affairs of the Company since the date hereof or that the information contained herein is correct as of any time subsequent to such date.


The date of this Prospectus is March 21, 1997.


TABLE OF CONTENTS

Available Information.....................................  3

The Company...............................................  4

Selling Stockholders......................................  4

Plan of Distribution......................................  4

Incorporation of Certain Documents by Reference...........  5

Other Matters.............................................  5


AVAILABLE INFORMATION

The Company has filed with the Securities and Exchange Commission (the "Commission") a Registration Statement (the "Registration Statement") under the Securities Act of 1933, as amended (the "Securities Act"), with respect to the Shares offered hereby. This Prospectus does not contain all of the information set forth in the Registration Statement. For further information, reference is made to the Registration Statement and to the exhibits filed therewith. Each statement made in this Prospectus referring to a document filed as an exhibit to the Registration Statement or incorporated herein by reference is qualified by reference to such document.

The Company is subject to the informational requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance therewith files reports and other information with the Commission. Reports, proxy and information statements and other information filed by the Company can be inspected and copied at public reference facilities maintained by the Commission at Judiciary Plaza, 450 Fifth Street, N.W., Room 1024, in Washington, D.C. 20549, and at the Commission's Regional Offices located at Seven World Trade Center, Suite 1300, New York, New York 10048, and 500 West Madison Avenue, Suite 1400, Chicago, Illinois 60661. Copies of such material can be obtained by mail from the Public Reference Section of the Commission at 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates. The Commission also maintains a site on the World Wide Web, the address of which is http://www.sec.gov, that contains reports, proxy and information statements and other information regarding issuers, such as the Company, that file electronically with the Commission.

The Common Stock of the Company is quoted on NASDAQ and on the BSE under the symbols "MSON" for NASDAQ and "MSO" on the BSE. Reports, proxy and information statements and other information filed by the Company with the Commission can be inspected at the offices of the National Association of Securities Dealers, Inc., 1735 K Street, N.W., Washington, D.C. 20006.

The Company will promptly furnish, without charge, to each person to whom this Prospectus is delivered, upon written or oral request of such person, a copy of any and all of the information that has been incorporated by reference in this Prospectus (other than exhibits to such information, unless such exhibits are specifically incorporated by reference into such information). Requests for such copies should be directed to MISONIX, INC., 1938 New Highway, Farmingdale, New York 11735, Attn: Peter Gerstheimer, telephone number (516) 694-9555.

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THE COMPANY

The Company is a corporation formed under the laws of the State of New York with its principal executive office located at 1938 New Highway, Farmingdale, New York 11735. The telephone number of such office is (516) 694-9555.

SELLING STOCKHOLDERS

Non-employee directors selected by the Board of Directors of the Company are eligible to participate in the Directors' Plan. As such, the Selling Shareholders consist of such participants listed below who may offer up to an aggregate of 509,000 shares of Common Stock which have been acquired by them pursuant to grants made under the Plan. There can be no assurance that any of the Selling Shareholders will offer for sale or sell any or all of the Shares covered by this Prospectus.

The following is a list, as of March 21, 1997, of the Selling Shareholders and the number of shares held by each such Selling Shareholder:

                                                NUMBER OF         NUMBER OF         NUMBER OF        PERCENTAGE
                                               SHARES OWNED         SHARES        SHARES OWNED        OF CLASS
                         POSITION WITH         PRIOR TO THE        OFFERED          AFTER THE       OWNED AFTER
        NAME               THE COMPANY           OFFERING           HEREBY          OFFERING       THE OFFERING(1)
- - ---------------------  -------------------  ------------------ ---------------- ----------------  ----------------
Gary Gelman            Chairman of the          718,930(2)          459,000          259,930            6.18%
                       Board of Directors

Howard Alliger         Director                 721,072(3)          50,000           671,072           15.95%
=====================  ===================  ================== ================  ===============  ================


(1) Assuming all shares offered hereby are sold and based on the aggregate of (i) 3,699,436 shares issued and outstanding at February 28, 1997 and
(ii) the 509,000 shares issuable upon exercise of the options held by the Selling Shareholders.

(2) Includes vested and exercisable options to purchase 459,000 shares of Common Stock which options were granted pursuant to the Directors' Plan.

(3) Includes vested and exercisable options to purchase 50,000 shares of Common Stock which options were granted pursuant to the Directors' Plan.

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PLAN OF DISTRIBUTION

The Selling Shareholders may, from time to time, offer all or part of the Shares on the over-the-counter market or such other national securities exchange upon which the Common Stock is traded at the time of such sales, at prices prevailing at the time of such sales, or in negotiated transactions. The Company will pay all expenses in preparing and reproducing the Registration Statement of which this Prospectus is a part, but will not receive any part of the proceeds of any sales of such Shares. In addition, any securities covered by this Prospectus which qualify for sale pursuant to Rule 144 promulgated under the Securities Act may be sold under Rule 144 rather than pursuant to this Prospectus. The Selling Stockholders will pay the brokerage commissions charged to sellers in connection with any such sales.

The Company and the Selling Shareholders may enter into customary agreements concerning indemnification and the provision of information in connection with the sale of the Shares.

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

The following documents filed with the Commission by the Registrant are hereby incorporated by reference in this Prospectus:

(a) The Company's Annual Report on Form 10-KSB for the fiscal year ended June 30, 1996, as filed with the Commission on September 30, 1996.

(b) The Company's Form 10-QSB for the quarter ended September 30, 1996, as filed with the Commission on November 12, 1996, Form 10-QSB for the quarter ended December 31, 1996, as filed with the Commission on February 13, 1997, and Current Report on Form 8-K, as filed with the Commission on February 11, 1997.

(c) The description of the Company's Common Stock contained in the Registrant's Registration Statement on Form 8-A (Registration No. 1-10986) filed with the Commission on January 22, 1992 under Section 12 of the Exchange Act.

All documents filed by the Company pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, after the date hereof and prior to the termination of the offering shall be deemed to be incorporated by reference into this Registration Statement and to be a part hereof commencing on the respective dates on which such documents are filed.

OTHER MATTERS

Section 722 of the New York Business Corporation Law ("NYBCL") permits, in general, a New York corporation to indemnify any person made, or threatened to be made, a party to an action or proceeding by reason of the fact that he or she was a director or officer of the corporation, or served another entity in

any capacity at the request of the corporation, against any

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judgment, fines, amounts paid in settlement and reasonable expenses, including attorney's fees actually and necessarily incurred as a result of such action or proceeding, or any appeal therein, if such person acted in good faith, for a purpose he or she reasonably believed to be in, or, in the case of service for another entity, not opposed to, the best interests of the corporation and, in criminal actions or proceedings, in addition had no reasonable cause to believe that his or her conduct was unlawful. Section 723 of the NYBCL permits the corporation to pay in advance of a final disposition of such action or proceeding the expenses incurred in defending such action or proceeding upon receipt of an undertaking by or on behalf of the director or officer to repay such amount as, and to the extent, required by statute. Section 721 of the NYBCL provides that indemnification and advancement of expense provisions contained in the NYBCL shall not be deemed exclusive of any rights to which a director or officer seeking indemnification or advancement of expenses may be entitled, provided no indemnification may be made on behalf of any director or officer if a judgment or other final adjudication adverse to the director or officer establishes that his or her acts were committed in bad faith or were the result of active or deliberate dishonesty and were material to the cause of action so adjudicated, or that he or she personally gained in fact a financial profit or other advantage to which he or she was not legally entitled.

Article Seventh of the Company's Certificate of Incorporation provides, in general, that the Company may indemnify, to the fullest extent permitted by applicable law, every person threatened to be made a party to any action, suit or proceeding by reason of the fact that such person is or was an officer or director or was serving at the request of the Company as a director, officer, employee, agent or trustee of another corporation, business, partnership, joint venture, trust, employee benefit plan, or other enterprise, against expenses, judgments, fines and amounts paid in settlement in connection with such suit or proceeding. Article Seventh of the Certificate of Incorporation also provides that the Company may indemnify and advance expenses to those persons as authorized by resolutions of a majority of the Board of Directors or stockholders, agreement, directors' or officers' liability insurance policies, or any other form of indemnification agreement.

In accordance with that provision of the Certificate of Incorporation, the Company shall indemnify any officer or director (including officers and directors serving another corporation, partnership, joint venture, trust, employee benefit plan or other enterprise in any capacity at the Company's request) made, or threatened to be made, a party to an action or proceeding (whether civil, criminal, administrative or investigative) by reason of the fact that he or she was serving in any of those capacities against judgments, fines, amounts paid in settlement and reasonable expenses (including attorney's fees) incurred as a result of such action or proceeding. Indemnification would not be available under Article Seventh of the Certificate of Incorporation if a judgment or other final adjudication adverse to such director or officer establishes that (i) his or her acts were committed in bad faith or were the result of active and deliberate dishonesty and, in either case, were material to

the cause of action so adjudicated, or (ii) he or she personally gained in fact a financial profit or other advantage to which he or she was not legally entitled. Article Seventh of the Certificate of Incorporation further stipulates that the rights granted therein are contractual in nature.

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Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers or persons controlling the Company pursuant to the foregoing provisions and agreements, the Company has been informed that, in the opinion of the Commission, such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

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PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Incorporation Of Documents By Reference.

The following documents filed with the Securities and Exchange Commission (the "Commission") by MISONIX, INC. (the "Registrant") are hereby incorporated by reference in this Registration Statement:

(a) The Registrant's Annual Report on Form 10-KSB for the fiscal year ended June 30, 1996, as filed with the Commission on September 30, 1996;

(b) The Registrant's Form 10-QSB for the quarter ended September 30, 1996, as filed with the Commission on November 12, 1996, Form 10-QSB for the quarter ended December 31, 1996, as filed with the Commission on February 13, 1997, and Current Report on Form 8-K, as filed with the Commission on February 11, 1997;

(c) The description of the Registrant's common stock, $0.01 par value (the "Common Stock"), contained in the Registrant's Registration Statement on Form 8-A (Registration No. 1-10986) filed with the Commission on January 22, 1992 under Section 12 of the Securities Exchange Act of 1934, as amended (the "Exchange Act").

All documents filed by the Registrant pursuant to Sections 13(a),
13(c), 14 and 15(d) of the Exchange Act, after the date hereof and prior to the filing of a post-effective amendment to the Registration Statement which indicates that all the securities offered hereby have been sold, or which deregisters all such securities then remaining unsold, shall be deemed to be incorporated by reference into this Registration Statement and to be a part hereof commencing on the respective dates on which such documents are filed.

Item 4. Description of Securities.

Not Applicable.

Item 5. Interest of Named Experts and Counsel.

Not Applicable.

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Item 6. Indemnification of Directors and Officers.

Section 722 of the New York Business Corporation Law ("NYBCL") permits,

in general, a New York corporation to indemnify any person made, or threatened to be made, a party to an action or proceeding by reason of the fact that he or she was a director or officer of the corporation, or served another entity in any capacity at the request of the corporation, against any judgment, fines, amounts paid in settlement and reasonable expenses, including attorney's fees actually and necessarily incurred as a result of such action or proceeding, or any appeal therein, if such person acted in good faith, for a purpose he or she reasonably believed to be in, or, in the case of service for another entity, not opposed to, the best interests of the corporation and, in criminal actions or proceedings, in addition had no reasonable cause to believe that his or her conduct was unlawful. Section 723 of the NYBCL permits the corporation to pay in advance of a final disposition of such action or proceeding the expenses incurred in defending such action or proceeding upon receipt of an undertaking by or on behalf of the director or officer to repay such amount as, and to the extent, required by statute. Section 721 of the NYBCL provides that indemnification and advancement of expense provisions contained in the NYBCL shall not be deemed exclusive of any rights to which a director or officer seeking indemnification or advancement of expenses may be entitled, provided no indemnification may be made on behalf of any director or officer if a judgment or other final adjudication adverse to the director or officer establishes that his or her acts were committed in bad faith or were the result of active or deliberate dishonesty and were material to the cause of action so adjudicated, or that he or she personally gained in fact a financial profit or other advantage to which he or she was not legally entitled.

Article Seventh of the Registrant's Certificate of Incorporation provides, in general, that the Registrant may indemnify, to the fullest extent permitted by applicable law, every person threatened to be made a party to any action, suit or proceeding by reason of the fact that such person is or was an officer or director or was serving at the request of the Registrant as a director, officer, employee, agent or trustee of another corporation, business, partnership, joint venture, trust, employee benefit plan, or other enterprise, against expenses, judgments, fines and amounts paid in settlement in connection with such suit or proceeding. Article Seventh of the Certificate of Incorporation also provides that the Registrant may indemnify and advance expenses to those persons as authorized by resolutions of a majority of the Board of Directors or shareholders, agreement, directors' or officers' liability insurance policies, or any other form of indemnification agreement.

In accordance with that provision of the Certificate of Incorporation, the Registrant shall indemnify any officer or director (including officers and directors serving another corporation, partnership, joint venture, trust, employee benefit plan or other enterprise in any capacity at the Registrant's request) made, or threatened to be made, a party to an action or proceeding (whether civil, criminal, administrative or investigative) by reason of the fact that he or she was serving in any of those capacities against judgments, fines, amounts paid in settlement and reasonable expenses (including attorney's fees) incurred as a result of such action or proceeding. Indemnification would not be available under Article Seventh of the Certificate of Incorporation if a judgment or other final adjudication adverse to such director or officer establishes that (i) his or her acts were committed in bad faith or were the result of active and deliberate dishonesty and,

9

in either case, were material to the cause of action so adjudicated, or (ii) he or she personally gained in fact a financial profit or other advantage to which he or she was not legally entitled. Article Seventh of the Certificate of Incorporation further stipulates that the rights granted therein are contractual in nature.

At present, there is no pending litigation or other proceeding involving a director or officer of the Registrant as to which indemnification is being sought, nor is the Registrant aware of any threatened litigation that may result in claims for indemnification by any officer or director.

Item 7. Exemption From Registration Claimed.

Not Applicable.

Item 8.  Exhibits.

              EXHIBIT
              NUMBER                        DESCRIPTION
              -------                       -----------
              4.1     1996 Employee Incentive Stock Option Plan.
              4.2     1996 Non-Employee Director Stock Option Plan.
                5     Opinion of Hartman & Craven LLP regarding legality of the
                      Common Stock being registered.
             23.1     Consent of Hartman & Craven LLP (included in their
                      opinion filed as Exhibit 5).
             23.2     Consent of Ernst & Young LLP.

Item 9. Undertakings.

(a) The undersigned Registrant hereby undertakes to:

(1) File, during any period in which it offers or sells securities, a post-effective amendment to this registration statement to:

(i) Include any prospectus required by section 10(a)(3) of the Securities Act;

(ii) Reflect in the prospectus any facts or events which, individually or together, represent a fundamental change in the information in the Registration Statement; and

(iii) Include any additional or changed material information on the plan of distribution.

10

PROVIDED, HOWEVER, that paragraphs (a)(1)(i) and (a)(1)(ii) above do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or 15(d) of the Exchange Act that are incorporated by reference in this Registration Statement.

(2) For determining liability under the Securities Act, treat each post-effective amendment as a new registration statement of the securities offered, and the offering of the securities at that time to be the initial bona fide offering.

(3) File a post-effective amendment to remove from registration any of the securities that remain unsold at the end of the offering.

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Farmingdale, State of New York, on March 21, 1997.

MISONIX, INC.

By:     /s/Joseph Librizzi
        ------------------------
        President and Chief
        Executive Officer

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed below by the following persons in the capacities and on the date indicated.

Signature                Title                                Date


/s/ Gary Gelman          Chairman of the Board of        March 21, 1997
- - --------------------     Directors
Gary Gelman


/s/ Joseph Librizzi      President, Chief Executive      March 21, 1997
- - ---------------------    Officer, and Director
Joseph Librizzi          (principal executive officer)


/s/ Peter Gerstheimer    Vice President and Chief        March 21, 1997
- - ---------------------    Financial Officer
Peter Gerstheimer        (principal financial
                         and accounting officer)


/s/ Howard Alliger       Director                        March 21, 1997
- - ------------------
Howard Alliger


/s/ Arthur Gerstenfeld   Director                        March 21, 1997
- - ----------------------
Arthur Gerstenfeld

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EXHIBIT INDEX

Exhibit No.                Description                         Page
- - -----------                -----------                         ----
4.1         1996 Employee Incentive Stock Option Plan           13

4.2         1996 Non-Employee Director Stock Option Plan        22

5           Opinion of Hartman & Craven LLP regarding
            legality of the Common Stock being registered       29

23.1        Consent of Hartman & Craven LLP (included in
            their opinion filed as Exhibit 5)                   31

23.2        Consent of Ernst & Young LLP                        32

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EXHIBIT 4.1

1996 EMPLOYEE INCENTIVE STOCK OPTION PLAN
of
MISONIX, INC.

1. PURPOSES OF THE PLAN.

This stock option plan (the "Plan") is designed to provide an incentive to key employees (including directors and officers who are key employees) of MISONIX, INC., a New York corporation (the "Company"), and its present and future subsidiary corporations, as defined in Paragraph 19 ("Subsidiaries"), and to offer an additional inducement in obtaining the services of such individuals. The Plan provides for the grant of "incentive stock options" ("ISOs") within the meaning of
Section 422 of the Internal Revenue Code of 1986, as amended (the "Code"), but the Company makes no warranty as to the qualification of any option as an "incentive stock option" under the Code.

2. STOCK SUBJECT TO THE PLAN.

Subject to the provisions of Paragraph 12, the aggregate number of shares of Common Stock, $.01 par value per share, of the Company ("Common Stock") for which options may be granted under the Plan shall not exceed 300,000. Such shares of Common Stock may, in the discretion of the Board of Directors of the Company (the "Board of Directors"), consist either in whole or in part of authorized but unissued shares of Common Stock or shares of Common Stock held in the treasury of the Company. The Company shall at all times during the term of the Plan reserve and keep available such number of shares of Common Stock as will be sufficient to satisfy the requirements of the Plan. Subject to the provisions of Paragraph 13, any shares of Common Stock subject to an option which for any reason expires, is canceled or is terminated unexercised or which ceases for any reason to be exercisable shall again become available for the granting of options under the Plan.

3. ADMINISTRATION OF THE PLAN.

The Plan shall be administered by a committee of the Board of Directors (the "Committee") consisting of not less than three Directors, each of whom shall be a "Non-Employee Director" within the meaning of Rule 16b-3 (or any successor rule or regulation) promulgated under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). A majority of the members of the Committee shall constitute a quorum, and the acts of a majority of the members present at any meeting at which a quorum is present, and any acts approved in writing by all members without a meeting, shall be the acts of the Committee.

Subject to the express provisions of the Plan, the Committee shall have

the authority, in its sole discretion, to determine the key employees who shall receive options; the times when they shall receive options; the number of shares of Common Stock to be subject to

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each option; the term of each option; the date each option shall become exercisable; whether an option shall be exercisable in whole, in part or in installments, and, if in installments, the number of shares of Common Stock to be subject to each installment; whether the installments shall be cumulative; the date each installment shall become exercisable and the term of each installment; whether to accelerate the date of exercise of any installment; whether shares of Common Stock may be issued on exercise of an option as partly paid, and, if so, the dates when future installments of the exercise price shall become due and the amounts of such installments; the exercise price of each option; the form of payment of the exercise price; the amount, if any, necessary to satisfy the Company's obligation to withhold taxes; whether to restrict the sale or other disposition of the shares of Common Stock acquired upon the exercise of an option and to waive any such restriction; whether to subject the exercise of all or any portion of an option to the fulfillment of contingencies as specified in the contract referred to in Paragraph 11 (the "Contract"), including, without limitation, contingencies relating to entering into a covenant not to compete with the Company and its Parent and Subsidiaries, to financial objectives for the Company, a Subsidiary, a division, a product line or other category, and/or the period of continued employment of the optionee with the Company, its Parent or its Subsidiaries, and to determine whether such contingencies have been met; to construe the respective Contracts and the Plan; with the consent of the optionee, to cancel or modify an option, provided such option as modified would be permitted to be granted on such date under the terms of the Plan; to prescribe, amend and rescind rules and regulations relating to the Plan; and to make all other determinations necessary or advisable for administering the Plan. The determinations of the Committee on the matters referred to in this Paragraph 3 shall be conclusive.

4. ELIGIBILITY.

The Committee may, consistent with the purposes of the Plan, grant options from time to time, to key employees (including directors and officers who are key employees) of the Company or any of its Subsidiaries. Options granted shall cover such number of shares of Common Stock as the Committee may determine; provided, however, that the aggregate market value (determined at the time the option is granted) of the shares of Common Stock for which any eligible person may be granted ISOs under the Plan or any other plan of the Company, or of a Parent or a Subsidiary of the Company, which are exercisable for the first time by such optionee during any calendar year shall not exceed $100,000. The $100,000 ISO limitation shall be applied by taking ISOs into account in the order in which they were granted. Any option

(or the portion thereof) granted in excess of such amount shall be treated as a nonqualified stock option.

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5. EXERCISE PRICE.

The exercise price of the shares of Common Stock under each option shall be determined by the Committee; provided, however, that the exercise price shall not be less than 100% of the fair market value of the Common Stock subject to such option on the date of grant; and further provided, that if, at the time an ISO is granted, the optionee owns (or is deemed to own under Section 424(d) of the Code) stock possessing more than 10% of the total combined voting power of all classes of stock of the Company, of any of its Subsidiaries or of a Parent, the exercise price of such ISO shall not be less than 110% of the fair market value of the Common Stock subject to such ISO on the date of grant.

The fair market value of the Common Stock on any day shall be (a) if the principal market for the Common Stock is a national securities exchange, the average between the high and low sales prices of the Common Stock on such day as reported by such exchange or on a consolidated tape reflecting transactions on such exchange, (b) if the principal market for the Common Stock is not a national securities exchange and the Common Stock is quoted on the National Association of Securities Dealers Automated Quotations System ("NASDAQ"), and (i) if actual sales price information is available with respect to the Common Stock, the average between the high and low sales prices of the Common Stock on such day on NASDAQ, or (ii) if such information is not available, the average between the highest bid and the lowest asked prices for the Common Stock on such day on NASDAQ, or (c) if the principal market for the Common Stock is not a national securities exchange and the Common Stock is not quoted on NASDAQ, the average between the highest bid and lowest asked prices for the Common Stock on such day as reported on the NASDAQ OTC Bulletin Board Service or by National Quotation Bureau, Incorporated or a comparable service; provided that if clauses (a), (b) and (c) of this Paragraph are all inapplicable, or if no trades have been made or no quotes are available for such day, the fair market value of the Common Stock shall be determined by the Committee by any method consistent with applicable regulations adopted by the Treasury Department relating to stock options. The determination of the Committee shall be conclusive in determining the fair market value of the Common Stock.

6. TERM.

The term of each option granted pursuant to the Plan shall be such term as is established by the Committee, in its sole discretion, at or before the time such option is granted; provided, however, that the

term of each option granted pursuant to the Plan shall be for a period not exceeding 10 years from the date of grant thereof, and further, provided, that if, at the time an option is granted, the optionee owns (or is deemed to own under Section 424(d) of the Code) stock possessing more than 10% of the total combined voting power of all classes of stock of the Company, of any of its Subsidiaries or of a Parent, the term of the option shall be for a period not exceeding five years from the date of grant. Options shall be subject to earlier termination as hereinafter provided.

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7. EXERCISE.

An option (or any part or installment thereof), to the extent then exercisable, shall be exercised by giving written notice to the Company at its principal office (at present 1938 New Highway, Farmingdale, New York 11735, Attn: Employee Stock Option Committee), stating which option is being exercised, specifying the number of shares of Common Stock as to which such option is being exercised and accompanied by payment in full of the aggregate exercise price therefor (or the amount due on exercise if the Contract permits installment payments) (a) in cash or by certified check or (b) if the Contract (at the time of grant) so permits, with previously acquired shares of Common Stock having an aggregate fair market value, on the date of exercise, equal to the aggregate exercise price of all options being exercised, or with any combination of cash, certified check or shares of Common Stock.

A person entitled to receive Common Stock upon the exercise of an option shall not have the rights of a shareholder with respect to such shares of Common Stock until the date of issuance of a stock certificate to him for such shares; provided, however, that until such stock certificate is issued, any option holder using previously acquired shares of Common Stock in payment of an option exercise price shall continue to have the rights of a shareholder with respect to such previously acquired shares.

In no case may a fraction of a share of Common Stock be purchased or issued under the Plan.

8. TERMINATION OF EMPLOYMENT.

Any holder of an option whose employment with the Company (and its Parent and Subsidiaries) has terminated for any reason other than his death or Disability (as defined in Paragraph 19) may exercise such option, to the extent exercisable on the date of such termination, at any time within 90 days after the date of termination, but not thereafter and in no event after the date the option would otherwise have expired; provided, however, that if his employment shall be terminated either (a) for cause, or (b) without the consent of the Company, said option shall terminate immediately. Options granted under the Plan shall not be affected by any change in the status of the

holder so long as he continues to be a full-time employee of the Company, its Parent or any of its Subsidiaries (regardless of having been transferred from one corporation to another).

For the purposes of the Plan, an employment relationship shall be deemed to exist between an individual and a corpo ration if, at the time of the determination, the individual was an employee of such corporation for purposes of Section 422(a) of the Code. As a result, an individual on military, sick leave or other bona fide leave of absence shall continue to be considered an employee for purposes of the Plan during such leave if the period of the leave does not exceed 90 days, or, if longer, so long as the individual's right to reemployment with the Company (or a related corporation) is guaranteed either by statute or by contract. If the period of leave exceeds 90 days and the individual's right to re-

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employment is not guaranteed by statute or by contract, the employment relationship shall be deemed to have terminated on the 91st day of such leave.

Nothing in the Plan or in any option granted under the Plan shall confer on any individual any right to continue in the employ of the Company, its Parent or any of its Subsidiaries, or interfere in any way with the right of the Company, its Parent or any of its Subsidiaries to terminate the employee's employment at any time for any reason whatsoever without liability to the Company, its Parent or any of its Subsidiaries.

9. DEATH OR DISABILITY OF AN OPTIONEE.

If an optionee dies (a) while he is employed by the Company, its Parent or any of its Subsidiaries, (b) within 90 days after the termination of his employment (unless such termination was for cause or without the consent of the Company) or (c) within one year following the termination of his employment by reason of Disability, the option may be exercised, to the extent exercisable on the date of his death, by his executor, administrator or other person at the time entitled by law to his rights under such option, at any time within one year after death, but not thereafter and in no event after the date the option would otherwise have expired.

Any optionee whose employment has terminated by reason of Disability may exercise his option, to the extent exercisable upon the effective date of such termination, at any time within one year after such date, but not thereafter and in no event after the date the option would otherwise have expired.

10. COMPLIANCE WITH SECURITIES LAWS.

The Committee may require, in its discretion, as a condition to the exercise of any option that either (a) a Registration Statement under the Securities Act of 1933, as amended (the "Securities Act"), with respect to the shares of Common Stock to be issued upon such exercise shall be effective and current at the time of exercise, or (b) there is an exemption from registration under the Securities Act for the issuance of shares of Common Stock upon such exercise. Nothing herein shall be construed as requiring the Company to register shares subject to any option under the Securities Act.

The Committee may require the optionee to execute and deliver to the Company his representation and warranty, in form and substance satisfactory to the Committee, that the shares of Common Stock to be issued upon the exercise of the option are being acquired by the optionee for his own account, for investment only and not with a view to the resale or distribution thereof. In addition, the Committee may require the optionee to represent and warrant in writing that any subsequent resale or distribution of shares of Common Stock by such optionee will be made only pursuant to (i) a Registration Statement under the Securities Act which is effective and current with respect to the shares of Common Stock being sold, or (ii) a specific exemption from the registration requirements of the Securities Act, but in claiming such exemption, the optionee shall prior to any offer of sale or sale of such shares of Common Stock provide the Company with a favorable written

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opinion of counsel, in form and substance satisfactory to the Company, as to the applicability of such exemption to the proposed sale or distribution.

In addition, if at any time the Committee shall determine in its discretion that the listing or qualification of the shares of Common Stock subject to such option on any securities exchange or under any applicable law, or the consent or approval of any governmental regulatory body, is necessary or desirable as a condition to, or in connection with, the granting of an option or the issue of shares of Common Stock thereunder, such option may not be exercised in whole or in part unless such listing, qualification, consent or approval shall have been effected or obtained free of any conditions not acceptable to the Committee.

11. STOCK OPTION CONTRACTS.

Each option shall be evidenced by an appropriate Contract which shall be duly executed by the Company and the optionee, and shall contain such terms and conditions not inconsistent herewith as may be determined by the Committee.

12. ADJUSTMENTS UPON CHANGES IN COMMON STOCK.

Notwithstanding any other provisions of the Plan, in the event of any change in the outstanding Common Stock by reason of a stock dividend, recapitalization, merger or consolidation in which the Company is the surviving corporation, split-up, combination or exchange of shares or the like, the aggregate number and kind of shares subject to the Plan, the aggregate number and kind of shares subject to each outstanding option and the exercise price thereof shall be appropriately adjusted by the Board of Directors, whose determination shall be conclusive.

In the event of (a) the liquidation or dissolution of the Company, (b) a merger or consolidation in which the Company is not the surviving corporation, or (c) any other capital reorganization in which more than 50% of the shares of Common Stock of the Company entitled to vote are exchanged, any outstanding options shall vest in their entirety and become exercisable within the period of thirty (30) days commencing upon the date of the action of the shareholders (or the Board of Directors if shareholders' action is not required) is taken to approve the transaction and upon the expiration of that period all options and all rights thereto shall automatically terminate, unless other provision is made therefor in the transaction.

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13. AMENDMENTS AND TERMINATION OF THE PLAN.

The Plan was adopted by the Board of Directors on March 27, 1996. No option may be granted under the Plan after March 26, 2006. The Board of Directors, without further approval of the Company's shareholders, may at any time suspend or terminate the Plan, in whole or in part, or amend it from time to time in such respects as it may deem advisable, including, without limitation, in order that options granted hereunder meet the requirements for "incentive stock options" under the Code, to comply with applicable requirements of the Securities Act and the Exchange Act, and to conform to any change in applicable law or to regulations or rulings of administrative agencies; provided, how ever, that no amendment shall be effective without the requisite prior or subsequent shareholder approval which would (a) except as contemplated in Paragraph 12, increase the maximum number of shares of Common Stock for which options may be granted under the Plan, (b) materially increase the benefits to participants under the Plan or (c) change the eligibility requirements for individuals entitled to receive options hereunder. No termination, suspension or amendment of the Plan shall, without the consent of the holder of an existing option affected thereby, adversely affect his rights under such option. The power of the Committee to construe and administer any options granted under the Plan prior to the termination or suspension of the Plan nevertheless shall continue after such termination or during such suspension.

14. NON-TRANSFERABILITY OF OPTIONS.

No option granted under the Plan shall be transferable otherwise than

by will or the laws of descent and distribution or a qualified domestic relations order ("QDRO") as defined by the Code or Title I of the Employee Retirement Income Security Act of 1974, as amended, or the rules thereunder, and options may be exercised, during the lifetime of the holder thereof, only by him or his legal representatives or pursuant to a QDRO. Except to the extent provided above, options may not be assigned, transferred, pledged, hypothecated or disposed of in any way (whether by operation of law or otherwise) and shall not be subject to execution, attachment or similar process.

15. WITHHOLDING TAXES.

The Company may withhold cash and/or shares of Common Stock to be issued with respect thereto having an aggregate fair market value equal to the amount which it determines is necessary to satisfy its obligation to withhold Federal, state and local income taxes or other taxes incurred by reason of the grant or exercise of an option, its disposition, or the disposition of the underlying shares of Common Stock. Alternatively, the Company may require the holder to pay to the Company such amount, in cash, promptly upon demand. The Company shall not be required to issue any shares of Common Stock pursuant to any such option until all required payments have been made. Fair market value of the shares of Common Stock shall be determined in accordance with Paragraph 5.

16. LEGENDS; PAYMENT OF EXPENSES.

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The Company may endorse such legend or legends upon the certificates for shares of Common Stock issued upon exercise of an option under the Plan and may issue such "stop transfer" instructions to its transfer agent in respect of such shares as it determines, in its discretion, to be necessary or appropriate to (a) prevent a violation of, or to perfect an exemption from, the registration requirements of the Securities Act, (b) implement the provisions of the Plan or any agreement between the Company and the optionee with respect to such shares of Common Stock, or (c) permit the Company to determine the occurrence of a "disqualifying disposition," as described in Section 421(b) of the Code, of the shares of Common Stock transferred upon the exercise of an option granted under the Plan.

The Company shall pay all issuance taxes with respect to the issuance of shares of Common Stock upon the exercise of an option granted under the Plan, as well as all fees and expenses incurred by the Company in connection with such issuance.

17. USE OF PROCEEDS.

The cash proceeds from the sale of shares of Common Stock pursuant to the exercise of options under the Plan shall be added to the general funds of the Company and used for such corporate purposes as the Board

of Directors may determine.

18. SUBSTITUTIONS AND ASSUMPTIONS OF OPTIONS OF CERTAIN CONSTITUENT CORPORATIONS.

Anything in this Plan to the contrary notwithstanding, the Board of Directors may, without further approval by the shareholders, substitute new options for prior options of a Constituent Corporation (as defined in Paragraph 19) or assume the prior options of such Constituent Corporation.

19. DEFINITIONS.

a. Subsidiary. The term "Subsidiary" shall have the same definition as "subsidiary corporation" in Section 424(f) of the Code.

b. Parent. The term "Parent" shall have the same definition as "parent corporation" in Section 424(e) of the Code.

c. Constituent Corporation. The term "Constituent Corporation" shall mean any corporation which engages with the Company, its Parent or any Subsidiary in a transaction to which Section 424(a) of the Code applies (or would apply if the option assumed or substituted were an ISO), or any Parent or any Subsidiary of such corporation.

d. Disability. The term "Disability" shall mean a permanent and total disability within the meaning of Section 22(e)(3) of the Code.

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20. GOVERNING LAW.

The Plan, such options as may be granted hereunder and all related matters shall be governed by, and construed in accordance with, the laws of the State of New York.

21. PARTIAL INVALIDITY.

The invalidity or illegality of any provision herein shall not affect the validity of any other provision.

22. SHAREHOLDER APPROVAL.

The Plan shall be subject to approval by the holders of a majority of the Company's stock outstanding and entitled to vote thereon at the next meeting of its shareholders. No options granted hereunder may be exercised prior to such approval, provided that the date of grant of any options granted hereunder shall be determined as if the Plan had

not been subject to such approval. Notwithstanding the foregoing, if the Plan is not approved by a vote of the shareholders of the Company on or before March 26, 1997, the Plan and any options granted hereunder shall terminate.

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EXHIBIT 4.2

MISONIX, INC.

1996 NON-EMPLOYEE DIRECTOR STOCK OPTION PLAN

1. GENERAL

1.1 Purpose Of The Plan

The purpose of the MISONIX, INC. 1996 Non-Employee Director Stock Option Plan (the "Plan") is to enable MISONIX, INC. (the "Company") to attract and retain persons of exceptional ability to serve as directors of the Company and to align the interests of directors and shareholders in enhancing the value of the Company's common stock, par value $.01 per share (the "Common Stock").

1.2 Administration Of The Plan

The Plan shall be administered by the Board of Directors (the "Board") which shall have full and final authority in its discretion to interpret, administer and amend the provisions of the Plan; to adopt rules and regulations for carrying out the Plan; to decide all questions of fact arising in the application of the Plan; and to make all other determinations necessary or advisable for the administration of the Plan.

1.3 Eligible Participants

Commencing March 27, 1996 each member of the Board who is not an employee of the Company or any of its subsidiaries shall be a participant (a "Participant") in the Plan.

1.4 Grants Under The Plan

Grants under the Plan shall be in the form of stock options as described in Section II (an "Option" or "Options").

1.5 Shares

The aggregate number of shares of Common Stock, including shares reserved for issuance pursuant to the exercise of Options, which may be issued under the terms of the Plan may not exceed 750,000 shares and hereby are reserved for such purpose. Whenever any outstanding grant or portion thereof expires, is canceled or forfeited or is otherwise terminated for any reason without having been exercised, the Common Stock allocable to the expired, canceled, forfeited or otherwise terminated portion of the grant may again be the subject of further grants hereunder.

Notwithstanding the foregoing, the number of shares of Common Stock

available for grants at any time under the Plan shall be reduced to such lesser amount as may be required pursuant to the methods of calculation necessary so that the exemptions provided pursuant

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to Rule 16b-3 under the Securities Exchange Act of 1934, as amended (the "Exchange Act") will continue to be available for transactions involving all current and future grants. In addition, during the period that any grants remain outstanding under the Plan, the Committee may make good faith adjustments with respect to the number of shares of Common Stock attributable to such grants for purposes of calculating the maximum number of shares of Common Stock available for the granting of future grants under the Plan, provided that following such adjustments the exemptions provided pursuant to Rule 16b-3 under the Exchange Act will continue to be available for transactions involving all current and future grants.

1.6 Definitions

The following definitions shall apply to the Plan:

(a) "Disability" shall have the meaning Provided in the Company's applicable disability plan or, in the absence of such a definition, when a Participant becomes totally disabled (as determined by a physician mutually acceptable to the Participant and the Company) before termination of his or her service on the Board if such total disability continues for more than three (3) months.

(b) "Fair Market Value" of the Common Stock on any day shall be
(a) if the principal market for the Common Stock is a national securities exchange, the average between the high and low sales prices of the Common Stock on such day as reported by such exchange or on a consolidated tape reflecting transactions on such exchange, (b) if the principal market for the Common Stock is not a national securities exchange and the Common Stock is quoted on the National Association of Securities Dealers Automated Quotations System ("NASDAQ"), and
(i) if actual sales price information is available with respect to the Common Stock, the average between the high and low sales prices of the Common Stock on such day on NASDAQ, or
(ii) if such information is not available, the average between the highest bid and the lowest asked prices for the Common Stock on such day on NASDAQ, or (c) if the principal market for the Common Stock is not a national securities exchange and the Common Stock is not quoted on NASDAQ, the average between the highest bid and lowest asked prices for the Common Stock on such day as reported on the NASDAQ OTC Bulletin Board Service or by National Quotation Bureau, Incorporated or a comparable service; provided that if clauses (a), (b) and (c) of this Paragraph are all inapplicable, or if no trades have

been made or no quotes are available for such day, the fair market value of the Common Stock shall be determined by the Board by any method consistent with applicable regulations adopted by the Treasury Department relating to stock options. The determination of the Board shall be conclusive in determining the fair market value of the Common Stock.

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2. OPTIONS

2.1 Terms And Conditions Of Options

Each Participant shall be granted such number of Options as determined from time to time during the term of the Plan by the Board.

2.2 Nonqualified Stock Options

The terms of the Options shall, at the time of grant, provide that the Options will not be treated as incentive stock options within the meaning of Section 422 of the Internal Revenue Code of 1986, as amended (the "Code").

2.3 Option Price

The Option price per Share shall be determined by the Board of Directors but shall not be less than the Fair Market Value of the Common Stock on the date the Option is granted.

2.4 Term And Exercise Of Options

(a) The term of an Option shall not exceed ten (10) years from the date of grant. Except as provided in this Section 2.4, after a Participant ceases to serve as a director of the Company for any reason, including, without limitation, retirement, or any other voluntary or involuntary termination of a Participant's service as a director (a "Termination"), the unexercisable portion of an Option shall immediately terminate and be null and void, and the unexercised portion of any outstanding Options held by such Participant shall terminate and be null and void for all purposes after three (3) months have elapsed from the date of the Termination unless extended by the Board, in its sole discretion, within thirty (30) days from the date of the Termination. Upon a Termination as a result of death or Disability, any outstanding Options may be exercised by the Participant or the Participant's legal representative within twelve (12) months after such death or Disability; provided, however, that in no event shall the period extend beyond the expiration of the Option term.

(b) Options shall become exercisable in whole or in part immediately from the date of grant. In no event, however, shall an Option be exercised after the expiration of ten (10) years from the date of grant.

(c) A Participant, by written notice to the Company, may designate one or more persons (and from time to time change such designation) including his legal representative, who, by reason of his or her death, shall acquire the right to exercise all or a portion of the Option. If no designation is made before the death of the Participant, the Participant's Option may be exercised by the personal representative of the Participant's estate or by a person who acquired the right to exercise such option by will or the laws of descent and

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distribution. If the person with exercise rights desires to exercise any portion of the Option, such person must do so in accordance with the terms and conditions of this Plan.

2.5 Notice Of Exercise

When exercisable pursuant to the terms of the Plan and the governing stock option agreement, an Option shall be exercised by the Participant as to all or part of the shares subject to the Option by delivering written notice of exercise to the Company at its principal business office or such other office as the Company may from time to time direct, (a) specifying the number of shares to be purchased, (b) accompanied by cash or a certified check payable to the Company in an amount equal to the full exercise price of the number of shares being exercised or with previously acquired shares of Common Stock having an aggregate Fair Market Value, on the date of exercise, equal to the aggregate exercise price of all Options being exercised (provided that such shares were not acquired less than six (6) months prior to such exercise date) or with any combination of cash, certified check or shares of Common Stock, and (c) containing such further provisions consistent with the provisions of the Plan as the Company may from time to time prescribe. No Option may be exercised after the expiration of the term specified in Section 2.4 hereof.

2.6 Limitation Of Exercise Periods

The Board may limit the time periods within which an Option may be exercised if a limitation on exercise is deemed necessary in order to effect compliance with applicable law.

3. GENERAL PROVISIONS

3.1 General Restrictions

Each grant under the Plan shall be subject to the requirement that if the Board shall determine, at any time, that (a) the listing, registration or qualification of the shares of Common Stock subject or related thereto upon any securities exchange or under any state or federal law, or (b) the consent or approval of any government regulatory body, or (c) an agreement by the Participant with respect to

the disposition of shares of Common Stock, is necessary or desirable as a condition of, or in connection with, the granting or the issuance or purchase of shares of Common Stock thereunder, such grant may not be consummated in whole or in part unless such listing, registration, qualification, consent, approval or agreement shall have been effected or obtained free of any conditions not acceptable to the Board.

3.2 Adjustments For Changes In Capitalization

Notwithstanding any other provisions of the Plan, in the event of any change in the outstanding Common Stock by reason of a stock dividend, recapitalization, merger or consolidation in which the Company is the surviving corporation, split-up, combination or exchange of shares or the like, the aggregate number and kind of shares subject to the

26

Plan, the aggregate number and kind of shares subject to each outstanding option and the exercise price thereof shall be appropriately adjusted by the Board, whose determination shall be conclusive.

In the event of (a) the liquidation or dissolution of the Company, (b) a merger or consolidation in which the Company is not the surviving corporation, or (c) any other capital reorganization in which more than 50% of the shares of Common Stock of the Company entitled to vote are exchanged, any outstanding options shall then remain exercisable within the period of thirty (30) days commencing upon the date of the action of the shareholders (or the Board of Directors if shareholders' action is not required) is taken to approve the transaction and upon the expiration of that period all options and all rights thereto shall automatically terminate, unless other provision is made therefor in the transaction.

3.3 Amendments

Without further approval of the shareholders, the Board may discontinue the Plan at any time and may amend it from time to time in such respect as the Board may deem advisable, unless shareholder or regulatory approval is required by law or regulation, and subject to any conditions established by the terms of such amendment; provided, however, that the Plan may not be amended more than once every six (6) months other than to comport with changes in the Code, the Employee Retirement Income Security Act or the rules thereunder.

3.4 Modification, Substitution Or Cancellation Of Grants

No rights or obligations under any outstanding Option may be altered or impaired without the Participant's consent. Any grant under the Plan may be canceled at any time with the consent of the Participant, and a new grant may be provided to such Participant in lieu thereof.

3.5 Shares Subject To The Plan

Shares distributed pursuant to the Plan shall be made available from authorized but unissued shares or from shares purchased or otherwise acquired by the Company for use in the Plan, as shall be determined from time to time by the Board.

3.6 Rights Of A Shareholder

Participants under the Plan, unless otherwise provided by the Plan, shall have no rights as shareholders by reason thereof unless and until certificates for shares of Common Stock are issued to them; provided, however, that until such stock certificate is issued, any Option holder using previously acquired shares of Common Stock in payment of an Option exercise price shall continue to have the rights of a shareholder with respect to such previously acquired shares.

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3.7      Withholding

         If a Participant is to experience a taxable event in connection with
         the receipt of shares of Common Stock pursuant to an Option exercise,
         the Participant shall pay the amount equal to the federal, state and
         local income taxes and other amounts as may be required by law to be
         withheld to the Company prior to the issuance of such shares of Common
         Stock.

3.8      Non-assignability

         Except as expressly provided in the Plan, no grant shall be
         transferable except by will, the laws of descent and distribution or a
         qualified domestic relations order ("QDRO") as defined by the Code or
         Title I of the Employee Retirement Income Security Act of 1974, as
         amended, or the rules thereunder. During the lifetime of the
         Participant, except as expressly provided in the Plan, grants under the
         Plan shall be exercisable only by such Participant or by the guardian
         or legal representative of such Participant or pursuant to a QDRO.

3.9      Nonuniform Determinations

         Determinations by the Board under the Plan (including, without
         limitation, determinations of the persons to receive grants, the form,
         amount and timing of such grants, and the terms and provisions of such
         grants and the agreements evidencing the same) need not be uniform and
         may be made by it selectively among persons who receive, or are
         eligible to receive, awards under the Plan, whether or not such persons
         are similarly situated.

3.10     Effective Date; Duration

         The Plan shall be subject to approval by the holders of a majority of

         the Company's stock outstanding and entitled to vote thereon at the
         next meeting of its shareholders. No Options granted hereunder may be
         exercised prior to such approval, provided that the date of grant of
         any Options granted hereunder shall be determined as if the Plan had
         not been subject to such approval. Notwithstanding the foregoing, if
         the Plan is not approved by a vote of the shareholders of the Company
         on or before March 26, 1997, the Plan and any Options granted hereunder
         shall terminate.

3.11     Governing Law

         The Plan and all actions taken thereunder shall be governed by and
         construed in accordance with the laws of the State of New York.

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EXHIBIT 5

HARTMAN & CRAVEN LLP
460 Park Avenue
New York, New York 10022

March 21, 1997

MISONIX, INC.
1938 New Highway
Farmingdale, New York 11735

Re: 1996 Employee Incentive Stock Option Plan and 1996 Non-Employee Director Stock Option Plan

Dear Sirs:

We are acting as counsel to MISONIX, INC., a New York corporation (the "Company"), in connection with the preparation and filing with the Securities and Exchange Commission (the "Commission") of a Registration Statement on Form S-8 (the "Registration Statement") under the Securities Act of 1933, as amended (the "Act"). The Registration Statement relates to (i) 300,000 shares of the Company's common stock, $0.01 par value per share ("Common Stock"), which are to be issued pursuant to the Company's 1996 Employee Incentive Stock Option Plan (the "Employee Plan") and (ii) 750,000 shares of Common Stock which are to be issued pursuant to the Company's 1996 Non-Employee Director Stock Option Plan (the "Directors' Plan"). The shares of Common Stock which are to be issued pursuant to the Employee Plan and the Directors' Plan are hereinafter collectively referred to as the "Shares".

In connection with this opinion, we have examined and relied upon copies certified or otherwise identified to our satisfaction of: (i) the Employee Plan; (ii) the Directors' Plan; (iii) the Company's Certificate of Incorporation, as amended and By-laws; (iv) the minute books and other records of corporate proceedings of the Company, as made available to us by officers of the Company; and have reviewed such matters of law as we have deemed necessary or appropriate for the purpose of rendering this opinion.

For purposes of this opinion we have assumed the authenticity of all documents submitted to us as originals, the conformity to originals of all documents submitted to us as certified or photostatic copies, and the authenticity of the originals of all documents submitted to us as copies. We have also assumed the legal capacity of all natural persons, the genuineness of all signatures on all documents examined by us, the authority of such persons signing on behalf of the parties thereto other than the Company and the due authorization, execution and delivery of all documents by the parties thereto other than the Company. As to certain factual matters material to the opinion

expressed herein, we have relied to the extent we deemed proper upon representations, warranties and statements as to factual matters of officers and other representatives of the Company. Our opinion expressed below is subject to the qualification that we express no opinion

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as to any law other than the laws of the State of New York and the federal laws of the United States of America. Without limiting the foregoing, we express no opinion with respect to the applicability thereto or effect of municipal laws or the rules, regulations or orders of any municipal agencies within any such state.

Based upon and subject to the foregoing qualifications, assumptions and limitations and the further limitations set forth below, it is our opinion that the Shares to be issued by the Company pursuant to the Employee Plan and the Directors' Plan have been duly authorized and reserved for issuance and, when certificates for the Shares have been duly executed by the Company, countersigned by a transfer agent, duly registered by a registrar for the Shares and issued and paid for in accordance with the terms of the Employee Plan and the Directors' Plan, the Shares will be validly issued, fully paid and non-assessable.

This opinion is limited to the specific issues addressed herein, and no opinion may be inferred or implied beyond that expressly stated herein. We assume no obligation to revise or supplement this opinion should the present laws of the State of New York or the federal laws of the United States of America be changed by legislative action, judicial decision or otherwise.

We hereby consent to the filing of this letter as an exhibit to the Registration Statement. In giving such consent, we do not admit that we are in the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Commission promulgated thereunder.

This opinion is furnished to you in connection with the filing of the Registration Statement and is not to be used, circulated, quoted or otherwise relied upon for any other purpose.

Very truly yours,

/s/HARTMAN & CRAVEN LLP

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EXHIBIT 23.2

CONSENT OF INDEPENDENT AUDITORS

We consent to the incorporation by reference in the Registration Statement (Form S-8) of Misonix, Inc. pertaining to the 1996 Employee Incentive Stock Option Plan and the 1996 Non-Employee Director Stock Option Plan of our report dated August 9, 1996, with respect to the consolidated financial statements of Misonix, Inc. included in the Annual Report (Form 10-KSB) for the year ended June 30, 1996.

                                                   /s/ Ernst & Young LLP

Melville, New York
March 21, 1997

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