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3. Inventory
3 Months Ended
Aug. 31, 2013
Inventory

Inventory consists of the following:

 

    August 31,     May 31,  
    2013     2013  
Raw materials   $ 822,363     $ 750,819  
Finished goods     434,645       293,560  
Total inventory   $ 1,257,008     $ 1,044,379