Inventories

6 Months Ended

12 Months Ended

Jun. 30, 2011

Dec. 31, 2010

Notes to Financial Statements

Inventories

(5) Inventories

Inventories consist of :	June 30, 2011		December 31, 2010
Raw materials	$	1,258,463	$	1,165,383
Work in process		81,897		5,314
Finished goods (including $689,000 and $633,000 held by a customer at June 30, 2011 and December 31, 2010, respectively)		1,612,669		1,542,919
Total inventories	$	2,953,029	$	2,713,616

(5) INVENTORIES

Inventories consist of the following at December 31:

	2009		2010
Materials	$	742,253	$	1,165,383
Work in process		1,135		5,314
Finished goods (including $383,000 and $633,000 held by a customer at December 31, 2009 and 2010, respectively)		842,691		1,542,919
Total	$	1,586,079	$	2,713,616