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ISO/CD 4322

Non-ionic surface active agents — Determination of sulphated ash — Gravimetric method

General information

30.20     Feb 16, 2026

ISO

ISO/TC 91

International Standard

Scope

The method consists in calcination of a test portion in the presence of sulphuric acid solution and weighing of the ash in form of sulphate.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 4322:1977

NOW

IN_DEVELOPMENT
ISO/CD 4322
30.20 CD study/ballot initiated
Feb 16, 2026

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