<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> 9-MOS YEAR <FISCAL-YEAR-END> SEP-30-1997 SEP-30-1996 <PERIOD-START> OCT-01-1996 OCT-01-1995 <PERIOD-END> JUN-30-1997 SEP-30-1996 <CASH> 241 595 <SECURITIES> 0 0 <RECEIVABLES> 2,550 1,652 <ALLOWANCES> 0 0 <INVENTORY> 2,088 1,932 <CURRENT-ASSETS> 5,092 4,382 <PP&E> 11,410 8,812 <DEPRECIATION> 2,777 2,333 <TOTAL-ASSETS> 14,423 11,374 <CURRENT-LIABILITIES> 1,730 1,323 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 298 <PREFERRED> 1,231 1,231 <COMMON> 498 484 <OTHER-SE> 5,143 4,472 <TOTAL-LIABILITY-AND-EQUITY> 14,423 11,374 <SALES> 7,347 9,113 <TOTAL-REVENUES> 11,038 12,794 <CGS> 2,268 3,227 <TOTAL-COSTS> 4,425 5,368 <OTHER-EXPENSES> 5,414 6,725 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 69 81 <INCOME-PRETAX> 1,141 683 <INCOME-TAX> 470 283 <INCOME-CONTINUING> 671 400 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 644 347 <EPS-PRIMARY> .21 .11 <EPS-DILUTED> .21 .11