ISO/CD 4322

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

Current stage: 30.60 Close of voting/ comment period May 13, 2026

Originator: ISO

Owner: ISO/TC 91 Surface active agents

Type: International Standard

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.

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ISO/CD 4322
30.60 Close of voting/ comment period
May 13, 2026