CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Feb. 28, 2015	May 31, 2014
Current Assets:
Cash and cash equivalents	$ 1,171,689	$ 1,509,125
Accounts receivable, less allowance for doubtful accounts of $17,007 and $30,000 as of February 28, 2015 and May 31, 2014,respectively	931,394	1,447,705
Inventories, net	2,110,798	1,765,772
Prepaid expenses and other	130,093	103,572
Deferred tax assets, current portion	87,000	87,000
Total current assets	4,430,974	4,913,174
Property and Equipment, net of accumulated depreciation and amortization of $1,282,017 and $1,160,934 as of February 28, 2015 and May 31, 2014, respectively .	485,421	614,337
Deferred Tax Assets, net of current portion	359,000	359,000
Investments	165,324	165,324
Intangible Assets, net	339,983	382,181
Other Assets	51,085	36,297
Total Assets	5,831,787	6,470,313
Current Liabilities:
Accounts payable and accrued expenses	352,945	441,681
Accrued compensation	130,425	114,163
Total current liabilities	483,370	555,844
Commitments and Contingencies (Note 5)
Shareholders' Equity:
Preferred stock, no par value authorized 5,000,000 shares, none issued and none outstanding at February 28, 2015 and May 31, 2014
Common stock, $0.08 par value authorized 25,000,000 shares, issued and outstanding 7,554,714 and 7,543,714 at February 28, 2015 and May 31, 2014, respectively	604,376	603,496
Additional paid-in-capital	18,318,692	18,309,154
Accumulated other comprehensive loss	(12,136)	(10,149)
Accumulated deficit	(13,562,515)	(12,988,032)
Total Shareholders' Equity	5,348,417	5,914,469
Total Liabilities and Shareholders' Equity	$ 5,831,787	$ 6,470,313