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Perlite 

Perlite

(02/07/2005)

Specifications: Physical properties of primary Perlite rock: Specific gravity, g/cm3 2.3 Organic admixtures virtually absent Compressive strength, kg/cm2 180 to 700 Water absorption, in % 3 to 10 Porosity, in % 8 to 36 Chemical properties: PH (10% suspension) 7.2 to 7.8 Composition, in %: SiO2 72.60- 74.84
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Perlite