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Inventories (Details) (USD $)
Mar. 31, 2013
Sep. 30, 2012
Inventories    
Raw materials $ 3,908,991 $ 2,693,753
Finished goods 759,134 818,082
Work in process 445,248 61,859
Inventory gross 5,113,373 3,573,694
Reserve for obsolescence (247,685) (461,205)
Inventory net $ 4,865,688 $ 3,112,489