Which test is commonly used to measure lubricant contamination levels?

Gravimetric analysis is instrumental in measuring lubricant contamination levels because it involves quantifying the mass of solid contaminants present in a lubricant sample. This method typically entails filtering the lubricant to capture particulate matter, which is then weighed to determine the concentration of contaminants. This quantitative approach provides precise information on how much foreign material is present, allowing for effective monitoring of lubricant conditions and performance.

While other methods, such as spectroscopic analysis, can indirectly indicate contamination through chemical composition, gravimetric analysis specifically targets the physical presence of solid particles. This precision makes it a favored method for assessing the cleanliness and quality of lubricating oils and greases throughout their lifecycle. Understanding contamination levels plays a vital role in maintenance and preventing equipment failure, as excessive contamination can lead to increased wear and degradation of the lubricant's effectiveness.