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Note 6 - Property and Equipment (Details) - USD ($)
6 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Sep. 30, 2015
Machinery and Equipment [Member]      
Property and equipment $ 956,759   $ 940,289
Furniture and Fixtures [Member]      
Property and equipment 968,655   877,011
Leasehold Improvements [Member]      
Property and equipment 71,738   67,913
Property and equipment 1,997,152   1,885,213
Accumulated depreciation (1,492,846)   (1,413,250)
Property and equipment, net 504,306   $ 471,963
Depreciation expense $ 94,251 $ 117,176