ASTM D1210
ASTM D1210 – Standard Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage Description: Significance and Use 4.1 In making pigmented products, the pigment is usually dispersed in a portion of the vehicle in some sort of mill. At this stage, it is necessary to be able to judge if the pigment agglomerates …