7. Inventory
Inventory as of June 30, 2012 and December 31, 2011 consisted of the following:
June 30, 2012
December 31, 2011
Raw materials and supplies
$
8,571,406
9,159,004
Work-in-process
95,992
462,832
Finished goods
843,921
732,871
9,511,319
10,354,707