Infrared Analysis

Method Fourier Transform Infra-Red Spectroscopy (FTIR)
Standards ASTM E

What is it used for?

A variety of techniques, including:



Oxides of both sulfur and nitrogen

Can also be used to determine a range of other species, including soot, glycol (from coolants)

Anti-wear additives such as ZDDP, Phenols

Fuel content

Further uses include determination of FAME content (biodiesel) and comparative analysis


How does it work?

The instrument output is based on how covalent bonds move in a given substance when excited by light absorption at a variety of wavelengths. Infrared light is passed through a fine film of oil – by comparing with a base oil.


What do the results tell us?

FTIR can tell us a variety of things, depending on the testing parameters.


These can include quantities of water, oxidation by-products, nitration, sulfonation, glycol, anti-oxidants, anti-wear, petrol, diesel, soot, and many more.


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