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Segment Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2015
Nov. 30, 2014
Feb. 28, 2015
Net Sales $ 3,032,457 $ 2,851,906 $ 8,890,027 $ 7,906,332  
Rental Expense 42,447 36,437 120,779 118,011  
Interest Expense 14,331 15,754 44,395 49,135  
Net Income 243,565 202,432 541,176 384,100  
Assets 10,833,598   10,833,598   $ 10,590,650
Debt 1,354,570   1,354,570   $ 1,477,921
Ultrasonic Spraying          
Net Sales 3,008,458 2,827,606 8,819,278 7,838,982  
Rental Expense $ 49,074 49,074 147,223 147,223  
Interest Expense 236 75 1,071  
Net Income $ 271,220 230,087 635,526 482,825  
Assets $ 8,369,038 7,871,820 $ 8,369,038 7,871,820  
Debt 35,849 35,849  
Rental Real Estate Operations          
Net Sales $ 73,073 73,374 $ 217,972 214,573  
Rental Expense 42,447 36,437 120,779 118,011  
Interest Expense 14,331 15,518 44,320 48,064  
Net Income (27,655) (27,655) (94,350) (98,725)  
Assets 2,464,560 2,535,792 2,464,560 2,535,792  
Debt 1,354,570 1,490,763 1,354,570 1,490,763  
Eliminations          
Net Sales 49,074 49,074 147,223 147,223  
Rental Expense (49,074) (49,074) (147,223) (147,223)  
Consolidated          
Net Sales 3,032,457 2,851,906 8,890,027 7,906,332  
Rental Expense 42,447 36,437 120,779 118,011  
Interest Expense 14,331 15,754 44,395 49,135  
Net Income 243,565 202,432 541,176 384,100  
Assets 10,833,598 10,407,612 10,833,598 10,407,612  
Debt $ 1,354,570 $ 1,526,612 $ 1,354,570 $ 1,526,612