BUSINESS SEGMENTS (Details) - Business Segments (USD $)	12 Months Ended
	May 31, 2013	May 31, 2012
Net sales:
Net Sales	$ 6,472,960	$ 6,081,131
Europe [Member]
Net sales:
Net Sales	2,840,000	2,533,000
United States [Member]
Net sales:
Net Sales	822,000	1,074,000
Asia [Member]
Net sales:
Net Sales	2,770,000	2,420,000
South America [Member]
Net sales:
Net Sales	7,000	2,000
Middle East [Member]
Net sales:
Net Sales	31,000	22,000
Other Foreign [Member]
Net sales:
Net Sales	$ 3,000	$ 30,000