The Reference Colour Glass consists of 5 organic glass scales mounted in a plastic holder, which is used for the comparison of the colour results from the relevant test.
Standards
EN 1744-1; ASTM C40
The 500 ml and 1000 ml capacity Graduated Glass Bottles are used for making reference standard colour and test solution according to the ASTM standard.
450 ml Cylindrical Glass Bottle is used for determination of organic impurities as required in the EN standard.