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Inventories (Details) (USD $)
Dec. 31, 2012
Sep. 30, 2012
Inventories    
Finished goods $ 806,750 $ 818,082
Work in process 163,152 61,859
Raw materials 3,653,944 2,693,753
Inventory gross 4,623,846 3,573,694
Reserve for obsolescence (431,504) (461,205)
Inventory net $ 4,192,342 $ 3,112,489