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Infrared Analysis

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

What is it used for?

A variety of techniques, including:

• Oxidation

• 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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