Clear liquids - Estimation of colour by the Gardner colour scale - Part K10: Visual method (ISO 4630-1:2004, IDT)
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.
