Type | SiO2 content | CaO content | Specific gravity g/cm3 | Porosity | Bulk density g/cm3 | Insoluble In HCL max | Surface area cm2/g min |
Volcanic rock Filter media(F02) | 50%-60% | 5%-10% | 2.2-2.5 | 40% min | 0.72-0.80 | 2.0% | 0.5*104 |
Particle size mm | 3 -5mm , 3-6mm,4 -6mm , 5-10mm , 8-16mm, 10-20mm, 16-32mm, 20-40mm, 30-50mm (Other specs. are available) |