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Note 5 - Inventories
6 Months Ended
Mar. 31, 2017
Notes to Financial Statements  
Inventory Disclosure [Text Block]
5.
INVENTORIES
 
Inventories consisted of the following:
 
 
 
 
March 31,
 
 
September 30,
 
 
 
2017
 
 
2016
 
Raw materials
  $
4,559,297
    $
4,393,928
 
Finished goods
   
774,179
     
775,628
 
Work in process
   
185,285
     
174,485
 
Inventories, gross
   
5,518,761
     
5,344,041
 
Reserve for obsolescence
   
(398,646
)    
(580,132
)
Inventories, net
  $
5,120,115
    $
4,763,909