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