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Condensed Consolidated Statements of Operations (Unaudited) (USD $)
 3 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Revenues:    
Product sales $ 2,762,345 $ 3,545,053
Contract and other 217,762 66,582
Total revenues 2,980,107 3,611,635
Cost of revenues 1,494,284 1,863,041
Gross profit 1,485,823 1,748,594
Operating expenses:    
Selling, general and administrative 1,172,475 1,056,559
Research and development 421,921 381,318
Total operating expenses 1,594,396 1,437,877
(Loss) income from operations (108,573) 310,717
Other income 8,197 12,944
(Loss) income from operations before income taxes (100,376) 323,661
Income tax expense   9,715
Net (loss) income $ (100,376) $ 313,946
Net income per common share-basic and diluted $ 0.00 $ 0.01
Weighted average common shares outstanding:    
Basic 32,399,199 32,374,499
Diluted 32,399,199 33,061,520