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Note 2 - Inventory

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Inventory Disclosure [Text Block]

NOTE

2

- INVENTORY

Inventory consisted of the following at

March 31, 2020

and

December 31, 2019:

		20 20				201 9
Furnace parts and supplies		$	925,300			$	621,991
Raw materials			1,967,234				2,125,921
Work in process			1,877,131				1,624,499
Finished goods and filtration systems			1,209,729				1,492,135
Reserve for obsolescence			(654,895	)			(665,308	)
Net Inventory		$	5,324,499			$	5,199,238

Inventory valuation adjustments for excess and obsolete inventory are calculated based on current inventory levels, movements, expected useful lives, and estimated future demand for the products.

X

- References

No definition available.

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X

- Definition

The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

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