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Inventory (Tables)
12 Months Ended
Jul. 31, 2012
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]

Inventory consists of the following:

    July 31,  
    2012     2011  
             
Raw materials   $     $ 502,195  
Finished goods           215,247  
Total   $     $ 717,442