JIS K 0071-1:2017 specifies a method for estimating the colour of chemical products which are liquid at ordinary temperature, or of those which, when heated, become molten state. It is applicable to clear liquid having a colour characteristic similar to those of the platinum-cobalt colour standard solution.
JIS K 0071-1:2017
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Test methods for colour of chemical products — Part 1: Estimation of colour in Hazen units (platinum-cobalt colour scale)
Japanese Industrial Standard / Japanese Standards Association , 01/01/2017
