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Inventories (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Summary of inventories    
Raw materials $ 315,768 $ 199,257
Finished goods 765,729 999,391
Inventory gross, Total 1,081,497 1,198,648
Allowance for excess inventory quantities (60,166) (60,166)
Inventories net, Total $ 1,021,331 $ 1,138,482