GB/T 3143-1982: Color determination method of liquid chemicals (Hazen unit - Platinum-cobalt scale)

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Scope

COMPARE the color of the sample with that of the standard platinum-cobalt
color solution by visual inspection. USE Hazen (platinum-cobalt) color unit to
show the results. The Hazen (platinum-cobalt) color unit indicates that. A liter
of solution contains the color of 1mg of platinum (calculated as chloroplatinic
acid) and 2mg of cobalt chloride hexahydrate solution.

Basic Data

Standard ID	GB/T 3143-1982 (GB/T3143-1982)
Description (Translated English)	Color determination method of liquid chemicals (Hazen unit - Platinum-cobalt scale)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G04
Classification of International Standard	71.040.40
Word Count Estimation	4,465
Date of Issue	7/20/1982
Date of Implementation	3/1/1983
Issuing agency(ies)	National Bureau of Standards
Summary	This Standard is applicable to the determination of transparent or slightly closer to the reference platinum - diamond color liquid chemical products, color number; this feature is usually quite oak color yellow.