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Note 5 - Inventories (Tables)
6 Months Ended
Mar. 31, 2015
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
March 31,
 
 
September 30,
 
 
 
2015
 
 
2014
 
Raw materials
  $ 4,130,283     $ 3,462,869  
Finished goods
    707,927       634,246  
Work in process
    101,063       153,107  
Inventories, gross
    4,939,273       4,250,222  
Reserve for obsolescence
    (377,395 )     (354,486 )
Inventories, net
  $ 4,561,878     $ 3,895,736