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IP 569: Determination of colour in Lovibond® units — Automatic method
- Method adopted/last revised: 2009
- Method reapproved: 2019
- REF/ISBN: IP569-2939444
- Status: Current
- First printed in STM books: February 2009
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Scope
This standard specifies procedures for automatically determining the colour of dyed and undyed petroleum products except those containing residues from crude petroleum processing. Solid or semi-solid products, such as petrolatum and wax, are tested in the molten state. The manual procedure for the determination of colour in the same units is described in IP 17.
NOTE - The interlaboratory precision study did not include solid or semi solid samples. This test method may be applied to these samples but the precision has not been determined.
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