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.
État actuel: PubliéeDate de publication: 1973-10
Edition: 1Nombre de pages: 2
Comité technique: ISO/TC 47 Chimie
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|std 1 40|
|std 2 40||Papier|