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Note 4 - Inventory

6 Months Ended

Jun. 30, 2022

Notes to Financial Statements

Inventory Disclosure [Text Block]

NOTE 4 - INVENTORY

Inventory consisted of the following on June 30, 2022, and December 31, 2021:

		June 30, 2022				December 31, 2021
Furnace parts and supplies		$	477,599			$	213,224
Raw materials			2,292,852				2,144,067
Work in process			1,080,722				1,671,290
Finished goods and filtration systems			2,014,225				1,660,907
Reserve for obsolescence			(419,985	)			(268,470	)
Net Inventory		$	5,445,413			$	5,421,027

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.

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- 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 https://asc.fasb.org/topic&trid=2126998

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