CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $)	12 Months Ended
	May 31, 2014	May 31, 2013
Net sales	$ 5,120,451	$ 6,472,960
Cost of sales	(3,451,243)	(4,045,099)
GROSS PROFIT	1,669,208	2,427,861
OPERATING EXPENSES
Selling, general and administrative	1,525,936	1,454,767
Research and development	589,866	459,086
Total operating expenses	2,115,802	1,913,853
(LOSS) INCOME FROM OPERATIONS	(446,594)	514,008
OTHER INCOME (EXPENSE)
Interest expense	(142)	(302)
Interest and dividend income	17,183	10,708
Other income	3,133	50
Total other income	20,174	10,456
(LOSS) INCOME BEFORE INCOME TAXES	(426,420)	524,464
INCOME TAX BENEFIT	210,760	12,493
NET (LOSS) INCOME	(215,660)	536,957
BASIC NET (LOSS) INCOME PER COMMON SHARE (in Dollars per share)	$ (0.03)	$ 0.08
DILUTED NET (LOSS) INCOME PER COMMON SHARE (in Dollars per share)	$ (0.03)	$ 0.07
WEIGHTED AVERAGE NUMBER OF COMMON AND COMMON EQUIVALENT SHARES
Basic (in Shares)	7,370,787	7,024,418
Diluted (in Shares)	7,370,787	7,451,113
NET (LOSS) INCOME	(215,660)	536,957
OTHER COMPREHENSIVE LOSS
Foreign currency translation	(1,143)	(2,976)
COMPREHENSIVE (LOSS) INCOME	$ (216,803)	$ 533,981