... carbonate, light calcium carbonate, talcum powder,kaolin, graphite, BT-1500 Centrifugal Sedimentation Particle Size AnalyzerBT-1500 type has excellent ... to specific requirement.Accuracy and repeatability test results of BT-1500 (for standard sample) D10D16D25D50D75D84D90Standard value(μm)19.1 ... data of standard sample SB2005 and test data of BT-1500 D10D16D25D50D75D84D90Standard value (μm ) 3.60±2.14 ...