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Inventory (Tables)
6 Months Ended
Nov. 30, 2012
Inventory

               Inventory consists of the following:

                       

 November 30,

 May 31,

2012

2012

Raw materials

 $        710,904

 $        593,225

Finished goods

           422,658

           363,413

Total inventory

 $     1,133,562

 $        956,638