4. Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Notes to Financial Statements

Inventories

Inventories consist of the following at March 31, 2013 and December 31, 2012:

	March 31, 2013		December 31, 2012
Raw materials	$	325,570	$	398,510
Work in progress		245,117		116,319
Finished goods		105,751		141,568
Total	$	676,438	$	656,397