ISO 6618:1997
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Petroleum products and lubricants — Determination of acid or base number — Colour-indicator titration method
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06-02-1997
Specifies a colour-indicator titration method for the determination of acidic or basic constituents in petroleum products and lubricants soluble in mixtures of toluene and propan-2-ol. It is applicable for the determination of acids or bases having extremly low dissociation constants. Replaces the first edition.
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