LABULK 307 ASTM D1895 Method A Plastics Apparent Density Tester LABULK 307 Apparent Density Tester is an apparatus used to physically measure the apparent density of plastic materials and moulding materials. It is produced stringently according to international standard ASTM D 1895 Standard Test Method for Apparent Density, Bulk Factor, and Pourability of Plastic Materials-Test Method A. LABULK 307 ASTM D1895 bulk density equipment is used to measure the apparent density of fine granules and powders that can be poured readily through a small funnel.