CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Feb. 29, 2012		May 31, 2011
Current Assets
Cash and cash equivalents	$ 898,458		$ 989,270
Accounts receivable	1,343,417	[1]	747,075	[2]
Inventories, net	1,862,002		1,785,525
Prepaid expenses and other	183,047		237,563
Deferred tax assets, current portion	127,000		127,000
Total Current Assets	4,413,924		3,886,433
Property and Equipment, net of accumulated depreciation and amortization	597,100		567,323
Deferred Tax Assets, net of current portion	111,000		111,000
Investments	165,324		165,324
Intangible Assets, net	203,363		177,410
Other Assets	53,548		47,888
Total Assets	5,544,259		4,955,378
Current Liabilities
Accounts payable and accrued expenses	451,828		451,569
Accrued compensation	185,555		138,056
Accrued income taxes	25,256		0
Loan for equipment purchase	0		35,390
Total Current Liabilities	662,639		625,015
Commitments and Contingencies (Note 5)
Shareholders’ Equity
Preferred stock	0	[3]	0	[4]
Common stock	553,466	[5]	549,466	[6]
Additional paid-in-capital	17,697,577		17,643,121
Accumulated other comprehensive loss	(5,988)		(4,460)
Accumulated deficit	(13,363,435)		(13,857,764)
Total Shareholders’ Equity	4,881,620		4,330,363
Total Liabilities and Shareholders’ Equity	$ 5,544,259		$ 4,955,378

[1] less allowance for doubtful accounts of $69,310 as of February 29, 2012

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

[3] no par value authorized 5,000,000 shares, none issued and none outstanding at February 29, 2012

[4] no par value authorized 5,000,000 shares, none issued and none outstanding at May 31, 2011

[5] , $0.08 par value authorized 25,000,000 shares, issued and outstanding 6,918,339 at February 29, 2012

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