... ,20-50mesh ,30-50mesh ,50-70mesh ,70-90mesh ,90-120mesh and other products.Uses: (1) 8-12mesh ,12-18mesh ,18-20mesh ... pearl sand can be as expansive as the beer, pharmaceutical agents and use of filtering low-temperature oxygen tank with insulation. Place ... .5 0.1-1 1-3 3-5mmType: Expanded Perlite and Perlite sandApplication: building ,horticulture, filter aid...SiO2 Content (%): 69-72 ...