Note 6 - Inventories - Schedule of Inventory (Details) - USD ($)	Dec. 31, 2019	Sep. 30, 2019
Raw materials	$ 4,952,553	$ 5,060,331
Finished goods	1,108,310	998,607
Work in process	625,882	306,809
Inventories, gross	6,686,745	6,365,747
Reserve for obsolescence	(624,999)	(530,584)
Inventories, net	$ 6,061,746	$ 5,835,163

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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