... 32mesh, 20-40mesh, 50-150mesh, 200-325mesh. Expanded Perlite: 60/100/120/150/200mes Unexpanded Perlite: 12-16mesh, 14-20mesh, 16-32mesh, 20 ... -40mesh, 50-150mesh, 200-325mesh.Expanded Perlite: 60mesh, 100mesh, ... 120mesh, 150mesh, 0.1-1mm, 1-2mm, 2-4mm Horticultural Perlite: 1-2mm, 2-4mm, 1-4mm.Data for referenceElement: SiO2 ...