ISO 4322:1977 - Non-ionic surface active agents — Determination of sulphated ash — Gravimetric method

Published (Edition 1, 1977)

This standard was last reviewed and confirmed in 2019. Therefore this version remains current.

ISO 4322:1977

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Abstract

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.

General information

Status
: Published

Publication date
: 1977-05

Stage
: International Standard under systematic review [90.20]
Edition
: 1

Number of pages
: 2
Technical Committee :
ISO/TC 91

ICS :
71.100.40
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Life cycle

Now

Published

ISO 4322:1977

A standard is reviewed every 5 years
Stage: 90.20 (Under review)

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