Note 4 - Inventory (Detail) - Major Classes Of Inventory (USD $)	Aug. 31, 2012	Nov. 30, 2011
Raw materials	$ 8,473,311	$ 7,623,095
Work in process	753,043	394,158
Finished goods	7,332,153	7,982,192
	16,558,507	15,999,445
Less: Reserves	(2,842,267)	(2,750,340)
	$ 13,716,240	$ 13,249,105

The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

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+ Details