FORM 8-A

SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
PURSUANT TO SECTION 12(B) OR (G) OF THE
SECURITIES EXCHANGE ACT OF 1934

BIOANALYTICAL SYSTEMS, INC.
(EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) 

INDIANA. . . . . . . . . . . . . . . . .           35-1345024
(STATE OF INCORPORATION. . . . . . . . .     (I.R.S. EMPLOYER
 OR ORGANIZATION) . . . . . . . . . . . .  IDENTIFICATION NO.)

2701 KENT AVENUE
WEST LAFAYETTE, INDIANA. . . . . . . . .                47906
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)           (ZIP CODE)

SECURITIES TO BE REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT: NONE

IF THIS FORM RELATES TO THE REGISTRATION OF A CLASS OF SECURITIES PURSUANT TO SECTION 12(B) OF THE EXCHANGE ACT AND IS EFFECTIVE PURSUANT TO GENERAL INSTRUCTION A.(C), CHECK THE FOLLOWING BOX:

IF THIS FORM RELATES TO THE REGISTRATION OF A CLASS OF SECURITIES PURSUANT TO
SECTION 12(G) OF THE EXCHANGE ACT AND IS EFFECTIVE PURSUANT TO GENERAL INSTRUCTION A.(D), CHECK THE FOLLOWING BOX: [X]

SECURITIES ACT REGISTRATION STATEMENT FILE NUMBER TO WHICH THIS FORM RELATES:
333-36429

SECURITIES TO BE REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT: COMMON SHARES

ITEM 1. DESCRIPTION OF COMMON SHARES TO BE REGISTERED.

The Description of the Registrant s Common Shares contained in the Registration Statement on Form S-1, Registration No. 333-36429, and the Description of the Registrant s Common Shares which will be contained in the Prospectus which will be filed by the Registrant pursuant to Rule 424(b) under the Securities Act of 1933, as amended, are hereby incorporated by reference.

ITEM 2. EXHIBITS.

The securities described herein are to be registered on the Nasdaq National Market ( NASDAQ ), on which no other securities of the Registrant are registered. Accordingly, the following Exhibits required in accordance with Part II to the instructions as to Exhibits to Form 8-A have been or will be filed with NASDAQ. 

Exhibit
Number.  Description of Exhibit
-------  ----------------------------------------------------

 1. . .  Registration Statement on Form S-1, Registration No.
         333-36429, as filed with the Securities and Exchange
         Commission on September 26, 1997 under the
         Securities Act of 1933, as amended.

         Not Applicable.
 2


 3. . .  Not Applicable.

 4.1. .  Second Restated Articles of Incorporation of
         Bioanalytical Systems, Inc.


 4.2. .  Second Restated Bylaws of Bioanalytical Systems,
         Inc.


 4.3. .  Letter Agreement  by and among Bioanalytical
         Systems, Inc., Primus Capital Fund II, L.P. and
         Middlewest Ventures II, L.P.

 5. . .  Specimen copy of Bioanalytical Systems, Inc.
         Common Share Certificate.

 6. . .  Not Applicable.

SIGNATURE

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized.

BIOANALYTICAL SYSTEMS, INC. 

By:      /s/  Peter  T.  Kissinger
         Peter  T.  Kissinger
         President  and  Chief  Executive  Officer


Date:  November  11,  1997