Infrared Analysis (FTIR)


When organic compounds, such as lubricating oils, are exposed to infrared light, substances present within the compound will absorb the light at specific wavelengths. The amount of absorbance at a particular wavelength is related to both the type and quantity of absorbing material. In this way, certain contaminants and physical changes in the lubricant can be directly measured according to a molecular spectrum. Glycol (coolant) contamination, sulfates, acid and base changes, as well as certain additives, may also be detected, along with an extremely wide range of organic compounds.