NEN ISO 7537 : 1997
Current
The latest, up-to-date edition.
PETROLEUM PRODUCTS - DETERMINATION OF ACID NUMBER - SEMI-MICRO COLOUR-INDICATOR TITRATION METHOD
01-12-2013
Defines a semi-micro colour-indicator method for the determination of acidic constituents in new or used petroleum products and lubricants soluble in mixtures of toluene and propan-2-ol, or capable of existing as suspensions in such mixtures, and where the suspended material is sufficiently dissociated that its acidic components can be titrated.
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