CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $)	12 Months Ended
	May 31, 2012	May 31, 2011
Net sales	$ 6,081,131	$ 4,899,375
Cost of sales	(3,783,955)	(3,373,786)
GROSS PROFIT	2,297,176	1,525,589
OPERATING EXPENSES
Selling, general and administrative	1,445,049	1,237,279
Research and development	347,128	420,571
Total operating expenses	1,792,177	1,657,850
INCOME (LOSS) FROM OPERATIONS	504,999	(132,261)
OTHER INCOME (EXPENSE)
Interest expense	(1,585)	(5,830)
Interest and dividend income	8,347	7,367
Other income	101,688	290,170
Total other income	108,450	291,707
INCOME BEFORE INCOME TAXES	613,449	159,446
INCOME TAX EXPENSE	(65,014)	(1,999)
NET INCOME	548,435	157,447
BASIC NET INCOME PER COMMON SHARE (in Dollars per share)	$ 0.08	$ 0.02
DILUTED NET INCOME PER COMMON SHARE (in Dollars per share)	$ 0.08	$ 0.02
WEIGHTED AVERAGE NUMBER OF COMMON AND COMMON EQUIVALENT SHARES
Basic (in Shares)	6,887,929	6,668,229
Diluted (in Shares)	7,107,759	6,704,307
NET INCOME	548,435	157,447
OTHER COMPREHENSIVE LOSS
Foreign currency translation	(1,570)	(947)
COMPREHENSIVE INCOME	$ 546,865	$ 156,500