Chemical products for industrial use. Transparent liquids. Visual assessment of colouration by the gardner colour scale.

Cette norme s'adresse aux personnes qui sont confrontées aux méthodes d'analyse des propriétés physico-chimiques des produits chimiques à usage industriel et en particulier ici à la coloration des produits chimiques fortement colorés, une des spécifications généralement retenues dans les fiches techniques des produits industriels.

Main informations

Collections

National standards and national normative documents

Publication date

September 1985

Number of pages

7 p.

Reference

NF T20-030

ICS Codes

71.040.50 Physicochemical methods of analysis

87.060.20 Binders

Classification index

T20-030

Print number

1 - 01/06/1986

International kinship

ISO 4630:1981

Sumary

Chemical products for industrial use. Transparent liquids. Visual assessment of colouration by the gardner colour scale.

Cette norme s'adresse aux personnes qui sont confrontées aux méthodes d'analyse des propriétés physico-chimiques des produits chimiques à usage industriel et en particulier ici à la coloration des produits chimiques fortement colorés, une des spécifications généralement retenues dans les fiches techniques des produits industriels.

Standard replaced by (2)

NF EN ISO 4630-1

March 2005

Standard Cancelled

Clear liquids - Estimation of colour by the Gardner colour scale - Part 1 : visual method

ISO 4630-1:2004 specifies a method for estimating, by means of the Gardner colour scale, the colour of clear, yellow/brown liquid products using colour-measuring instruments. The results may be invalid if other products are tested. It is applicable to drying oils, varnishes and solutions of fatty acids, polymerized fatty acids, resins, tall oil, tall oil fatty acids, rosin and related products. It is applicable to products having colours from Gardner 1 to Gardner 18. The Gardner scale is not applicable to products with colours lighter than 1 or darker than 18.

NF EN ISO 4630-2

March 2005

Standard Cancelled

Clear liquids - Estimation of colour by the Gardner colour scale - Part 2 : spectrophotometric method

ISO 4630-2:2004 specifies a method for estimating, by means of the Gardner colour scale, the colour of clear, yellow/brown liquid products using colour-measuring instruments. The results may be invalid if other products are tested. The test uses the Gardner colour scale described in ISO 4630-1, which describes a visual method. The method is applicable to drying oils, varnishes and solutions of fatty acids, polymerized fatty acids, resins, tall oil, tall oil fatty acids, rosin and related products. The method described provides a more precise way of measuring Gardner colour than that described in ISO 4630-1. It is applicable to products having colours from Gardner 1 to Gardner 18. The Gardner scale is not applicable to products with colours lighter than 1 or darker than 18.

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