Cowles dispersion test is carried out referring to the procedure from ASTM, add the pigment into alkyd resin (70% solid), stirred at high speed for a thorough mixing, then measuring the degree of dispersion (commonly referred to as fineness of grind) with a Hegman gauge
This is a key index reflecting the pigment's dispersion quality
Light fastness is evaluated in 8 grades, grades 1 8 represent poor to the best
Uses: widely used in the industries of painting, printing ink, rubber, plastic, stationery, and others
Packing: 25kg PP bag