... , 120mesh, 150mesh, 0.1-1mm, 0.5-1.5mm1-2mm, 2-4mm3-6mm 4-8mm Horticultural Perlite: 1-2mm, 2-4mm, 1-4mm ,3-5mm.4 ... oxygen and hydrogen.It can be sused to filter liquor,oil,medicine,food and dirty water.It can be used as ... catalyst in explosives.It can be used to absorb floating oil.It canbe used in agriculture and gardening to improve the ...