<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BIOANALYTICAL SYSTEMS, INC. CONSOLIDATED FINANCIAL STATEMENTS CONTAINED IN THE COMPANY'S REGISTRATION STATEMENT ON FORM S-1 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR YEAR <FISCAL-YEAR-END> SEP-30-1997 SEP-30-1996 <PERIOD-START> OCT-01-1996 OCT-01-1995 <PERIOD-END> SEP-30-1997 SEP-30-1996 <CASH> 161 595 <SECURITIES> 0 0 <RECEIVABLES> 3,013 1,652 <ALLOWANCES> 0 0 <INVENTORY> 1,911 1,932 <CURRENT-ASSETS> 5,342 4,382 <PP&E> 12,838 8,859 <DEPRECIATION> 2,803 2,333 <TOTAL-ASSETS> 15,931 11,374 <CURRENT-LIABILITIES> 2,849 1,323 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 298 <PREFERRED> 1,231 1,231 <COMMON> 498 484 <OTHER-SE> 5,156 4,472 <TOTAL-LIABILITY-AND-EQUITY> 15,931 11,374 <SALES> 9,932 9,113 <TOTAL-REVENUES> 14,923 12,794 <CGS> 3,334 3,227 <TOTAL-COSTS> 6,320 5,368 <OTHER-EXPENSES> 7,431 6,725 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 100 81 <INCOME-PRETAX> 1,097 683 <INCOME-TAX> 413 283 <INCOME-CONTINUING> 684 400 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 657 347 <EPS-PRIMARY> .21 .11 <EPS-DILUTED> .21 .11