v3.26.1
Note 5 - Inventories
6 Months Ended
Jun. 30, 2026
Notes to Financial Statements  
Inventory Disclosure [Text Block]

NOTE 5 INVENTORIES

 

Inventories consisted of the following on June 30, 2026, and December 31, 2025:

 

  

June 30,

  

December 31,

 
  

2026

  

2025

 

Raw materials

 $3,277,671  $3,282,184 

Work in process

  1,926,673   2,402,158 

Finished goods and filtration systems

  1,668,618   1,755,674 

Reserve for obsolescence

  (916,283)  (960,695)

Total inventories, net

 $5,956,679  $6,479,321 

 

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.