This part of ISO 4630 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 might 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.
BS EN ISO 4630-1:2004 history
2016BS EN ISO 4630:2015 Clear liquids. Estimation of colour by the Gardner colour scale
2004BS EN ISO 4630-1:2004 Clear liquids - Estimation of colour by the Gardner colour scale - Visual method
BS EN ISO 4630-1:2004 Clear liquids - Estimation of colour by the Gardner colour scale - Visual method was changed to BS EN ISO 4630:2015 Clear liquids. Estimation of colour by the Gardner colour scale.