In the case of a lubricating system operated under excessive temperature, viscosity change is caused by oxidation
and nitration reaction, and the generated oxide material adheres to the metal surface and causes equipment failure.
The acid value is a measure of the degree of contamination of organic/inorganic acid in oil.

1. The most economical way to test acid value (acid value can be measured only with reagents without equipment)
2. Rapid acid value measurement in less than 1 minute
3. Easy to use as reagents are packaged. (Safe as no toluene is used)
4. Certified test method based on ASTM D974, very accurate (Accuracy: ¡¾0.01AN, when using a micropipette))