Lubricant Analysis

The Elusive Acid Number: What Does It Really Mean?

The Elusive Acid Number: What Does It Really Mean?

The Acid Number of a lubricant, sometimes called the "Total Acid Number" or TAN, is a commonly reported value for oil analysis and is generally considered an indication of oil aging and degradation. But what does it mean, and how is it determined? Let's break down...

Lube Oil Varnish Detection and Control

Lube Oil Varnish Detection and Control

Varnish is a type of deposit that forms on the surface of equipment in lubrication systems. It is caused by the oxidation of the base oil and the buildup of additives in the oil over time, forming a sticky, varnish-like substance. Lube oil varnish can cause problems...

How Grease Analysis Helped Expose a Hidden Plant

How Grease Analysis Helped Expose a Hidden Plant

Those who have worked in or around maintenance and reliability have probably heard about the hidden plant. This term refers to that portion of the productivity of any industry that, for some reason, is wasted and goes completely unnoticed in the eyes of the...