Buildings, Equipment, Furnishings and Leasehold Improvements - Equipment, furnishings and leasehold improvements (Details) (USD $)	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Equipment, furnishings and leasehold improvements	$ 5,508,988	$ 5,311,613
Less: accumulated decpreciation	(2,799,975)	(2,494,337)
Equipment, furnishings and leasehold improvements, net	2,709,013	2,817,276
Depreciation Expense	332,617	339,318
Buildings
Equipment, furnishings and leasehold improvements	2,250,000	2,250,000
Laboratory Equipment
Equipment, furnishings and leasehold improvements	708,899	651,562
Machinery
Equipment, furnishings and leasehold improvements	646,983	639,102
Leasehold
Equipment, furnishings and leasehold improvements	228,860	207,979
Tradeshow and Demonstration Equipment
Equipment, furnishings and leasehold improvements	999,758	908,819
Furniture
Equipment, furnishings and leasehold improvements	$ 674,489	$ 654,151