The ester content of the oil sample is considered when working with synthetic oils or esters in biodegradable lubricants. Esters have unique properties such as high film strength and natural cleaning effect, but they are also sensitive to hydrolysis and oxidation.
FTIR spectroscopy is used to identify and monitor esters. The analysis provides answers as to whether the oil still contains sufficient ester content and whether the esters are intact.
The customer gains insight into the oil's lubricity and stability over time – crucial in critical applications such as hydraulics in sensitive environments.