CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Nov. 30, 2011		May 31, 2011
Current Assets
Cash and cash equivalents	$ 965,968		$ 989,270
Accounts receivable	1,132,212	[1]	747,075	[2]
Inventories, net	1,669,264		1,785,525
Prepaid expenses and other	119,121		237,563
Deferred tax assets, current portion	127,000		127,000
Total Current Assets	4,013,565		3,886,433
Property and Equipment, net of accumulated depreciation and amortization	545,449		567,323
Deferred Tax Assets, net of current portion	111,000		111,000
Investments	165,324		165,324
Intangible Assets, net	186,934		177,410
Other Assets	52,510		47,888
Total Assets	5,074,782		4,955,378
Current Liabilities
Accounts payable and accrued expenses	266,096		451,569
Accrued compensation	144,288		138,056
Loan for equipment purchase	11,742		35,390
Total Current Liabilities	422,126		625,015
Commitments and Contingencies
Shareholders' Equity
Preferred stock		[3]		[4]
Common stock	549,466	[5]	549,466	[6]
Additional paid-in-capital	17,654,153		17,643,121
Accumulated other comprehensive loss	(6,083)		(4,460)
Accumulated deficit	(13,544,880)		(13,857,764)
Total Shareholders' Equity	4,652,656		4,330,363
Total Liabilities and Shareholders' Equity	$ 5,074,782		$ 4,955,378

[1] Allowance for doubtful accounts of $65,183 as of Nov 30,2011

[2] Allowance for doubtful accounts of $32,204 as of May 31,2011

[3] No par value authorized 5,000,000 shares, issued and none outstanding at November, 2011.

[4] No par value authorized 5,000,000 shares, issued and none outstanding at May, 2011

[5] $0.08 par value authorized 25,000,000 shares, issued and outstanding 6,868,339 at November30, 2011

[6] $0.08 par value authorized 25,000,000 shares, issued and outstanding 6,868,339 at May 31, 2011