<ARTICLE> 5 <MULTIPLIER> 1 <CURRENCY> U.S. DOLLARS <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> SEP-30-1999 <EXCHANGE-RATE> 1 <CASH> 34,550,015 <SECURITIES> 0 <RECEIVABLES> 6,656,074 <ALLOWANCES> 65,000 <INVENTORY> 3,360,485 <CURRENT-ASSETS> 46,963,819 <PP&E> 13,869,590 <DEPRECIATION> 9,100,215 <TOTAL-ASSETS> 51,877,485 <CURRENT-LIABILITIES> 2,844,032 <BONDS> 0 <PREFERRED-MANDATORY> 64,537 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 47,655,704 <TOTAL-LIABILITY-AND-EQUITY> 51,877,485 <SALES> 13,682,004 <TOTAL-REVENUES> 14,237,491 <CGS> 10,446,195 <TOTAL-COSTS> 10,808,130 <OTHER-EXPENSES> 2,647,127 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 39,961 <INCOME-PRETAX> 782,234 <INCOME-TAX> 1,256 <INCOME-CONTINUING> 780,978 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 780,978 <EPS-BASIC> .11 <EPS-DILUTED> .10