CONSOLIDATED BALANCE SHEETS (USD $)	May 31, 2014	May 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 1,509,125	$ 2,469,796
Accounts receivable, less allowance for doubtful accounts of $30,000 and $115,730, respectively	1,447,705	871,660
Inventories, net	1,765,772	1,571,221
Deferred tax assets, current portion	87,000	144,000
Prepaid expenses and other	103,572	196,678
Total current assets	4,913,174	5,253,355
PROPERTY AND EQUIPMENT
Equipment	1,504,322	1,429,906
Furniture, fixtures and leasehold improvements	270,949	256,723
Total property and equipment	1,775,271	1,686,629
Accumulated depreciation	(1,160,934)	(1,032,009)
Net property and equipment	614,337	654,620
DEFERRED TAX ASSETS, net of current portion	359,000	85,000
INTANGIBLE ASSETS, net	382,181	165,200
INVESTMENTS	165,324	165,324
OTHER ASSETS	36,297	71,388
TOTAL ASSETS	6,470,313	6,394,887
CURRENT LIABILITIES
Accounts payable and accrued expenses	441,681	351,917
Accrued compensation	114,163	207,976
Total current liabilities	555,844	559,893
COMMITMENTS AND CONTINGENCIES (NOTE 9)
SHAREHOLDERS' EQUITY
Preferred stock, no par value, 5,000,000 authorized shares, no shares issued and outstanding at May 31, 2014 and 2013
Common stock, $.08 par value; 25,000,000 shares authorized; 7,543,714 and 7,274,714 shares issued and outstanding, respectively	603,496	581,976
Additional paid-in capital	18,309,154	18,034,396
Accumulated other comprehensive loss	(10,149)	(9,006)
Accumulated deficit	(12,988,032)	(12,772,372)
Total shareholders' equity	5,914,469	5,834,994
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 6,470,313	$ 6,394,887