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Segment Information (Details) (USD $)
 3 Months Ended
May 31, 2013
May 31, 2012
Feb. 28, 2013
Net Sales $ 2,374,394 $ 2,839,702  
Rental Expense 34,482 29,020  
Interest Expense 27,775 28,970  
Net Income (Loss) 73,748 11,100  
Assets 9,299,736   9,066,444
Debt 2,082,186   2,113,235
Ultrasonic Spraying
      
Net Sales 2,353,979 2,818,857  
Rental Expense 33,935 33,934  
Interest Expense 726 1,051  
Net Income (Loss) 80,928 13,260  
Assets 6,821,131 6,918,542  
Debt 125,858 184,477  
Rental Real Estate Operations
      
Net Sales 54,350 54,779  
Rental Expense 34,482 29,020  
Interest Expense 27,049 27,919  
Net Income (Loss) (7,180) (2,160)  
Assets 2,478,605 2,513,137  
Debt 1,956,328 2,020,161  
Eliminations
      
Net Sales 33,935 33,934  
Rental Expense (33,935) (33,934)  
Consolidated
      
Net Sales 2,374,394 2,839,702  
Rental Expense 34,482 29,020  
Interest Expense 27,775 28,970  
Net Income (Loss) 73,748 11,100  
Assets 9,299,736 9,431,679  
Debt $ 2,082,186 $ 2,204,638