... :white and gray 3.technique :expanded 4.H.S code:6806200000 5.Specific gravity:0.15-2.4g/cm3 Expanded perlite 1 ... Perlite: 60mesh, 100mesh, 120mesh, 150mesh, 0.1-1mm, 0.5-1.5mm1-2mm, 2-4mm3-6mm 4-8mm Horticultural Perlite: 1-2mm, 2 ... -70mesh 90-120mesh70-90mesh 20-40mesh ,0.05-1mm,0.06-2.5mm,0.1-1mm1-3mm3-5mm,4-8mm >40 micron etcBrilliant expansion ...