Product： 1) Cowles Dispersion Test is carried out referring to the procedure from ASTM, i.e., add the pigment into alkyd resin(70% solid), stir at high speed to mix them thoroughly, then measure the degree of dispersion (commonly referred to as "fineness of grind") with a Hegman Gauage. This is a key index reflecting the pigment's dispersion. (2) 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 and stationery etc. Packing: 25kgs P.P. bag.