LABULK 308 Plastic Materials Apparent Density Tester is manufactured according to ASTM D 1895 Standard Test Method for Apparent Density, Bulk Factor, and Pourability of Plastic Materials – Test Method B. It is used to measure the apparent density of coarse, granular materials, including dice and pellets, that either cannot be poured or that pour with difficulty through the funnel described in ASTM D1895 Test Method A.