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ISO/DIS 2211

Liquid chemical products — Measurement of colour in Hazen units (platinum-cobalt scale)

General information

Current stage: 40.00 Effective date: Sep 2, 2026

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.040.50

Scope

Applicable only to clear, slightly coloured liqids. Such colour characteristics are described as brownish-yellow. The principle is based on a visual comparison of the colour of a sample with that of colour standards. The results are expressed in terms of the platinum-cobalt scale. For routine control purposes a comparator, colorimeter or spectrophotometer may be used, if the values so obtained are identical with those obtained by visual comparison.

ISO/DIS 2211

Liquid chemical products — Measurement of colour in Hazen units (platinum-cobalt scale)

General information

Scope

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