Note 3 - Inventory

12 Months Ended

Dec. 31, 2015

Notes to Financial Statements

Inventory Disclosure [Text Block]

NOTE 3 - INVENTORY

Inventory consisted of the following at December 31, 2015 and December 31, 2014:

	2015			2014
Furnace parts and supplies	$	466,538		$	507,849
Raw materials		1,498,406			1,501,050
Work in process		1,770,070			1,326,840
Finished goods and filtration systems		1,788,161			2,028,225
Reserve for obsolescence		(606,504	)		(449,098	)
Net Inventory	$	4,916,671		$	4,914,866

The inventory is held as collateral on a lines and credit and guarantees with financial institutions. See Note 8.