Note 4 - Inventory (Detail) - Major Classes Of Inventory (USD $)	Feb. 28, 2013	Nov. 30, 2012
Raw materials	$ 9,291,987	$ 8,466,060
Work in process	334,271	632,969
Finished goods	7,077,804	7,694,528
	16,704,062	16,793,557
Less: Reserves	(2,577,717)	(2,466,075)
	$ 14,126,345	$ 14,327,482

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