Segment Information (Tables) - Segment information (Details) (USD $)	3 Months Ended		9 Months Ended
	Nov. 30, 2012	Nov. 30, 2011	Nov. 30, 2012	Nov. 30, 2011	Feb. 29, 2012
Net Sales	$ 2,202,406	$ 2,944,772	$ 7,433,215	$ 9,083,801
Rental Expense	28,807	36,535	86,437	100,328
Interest Expense	28,364	29,528	86,012	88,895
Net Income (Loss)	25,265	195,803	96,101	871,923
Assets	9,322,438		9,322,438		9,478,273
Debt	2,144,083		2,144,083		2,234,499
Ultrasonic Spraying
Net Sales	2,191,956	2,923,928	7,393,470	9,018,270
Rental Expense	33,935	33,935	101,805	101,805
Interest Expense	874	1,192	2,897	3,277
Net Income (Loss)	37,177	205,896	124,103	890,533
Assets	6,839,711	6,428,172	6,839,711	6,428,172
Debt	155,400	213,313	155,400	213,313
Rental Real Estate Operations
Net Sales	44,385	54,779	141,550	167,336
Rental Expense	28,807	36,535	86,437	100,328
Interest Expense	27,490	28,336	83,115	85,618
Net Income (Loss)	(11,912)	(10,093)	(28,002)	(18,610)
Assets	2,482,727	2,545,701	2,482,727	2,545,701
Debt	1,988,683	2,050,787	1,988,683	2,050,787
Eliminations
Net Sales	33,935	33,935	101,805	101,805
Rental Expense	(33,935)	(33,935)	(101,805)	(101,805)
Consolidated
Net Sales	2,202,406	2,944,772	7,433,215	9,083,801
Rental Expense	28,807	36,535	86,437	100,328
Interest Expense	28,364	29,528	86,012	88,895
Net Income (Loss)	25,265	195,803	96,101	871,923
Assets	9,322,438	8,973,873	9,322,438	8,973,873
Debt	$ 2,144,083	$ 2,264,100	$ 2,144,083	$ 2,264,100