Hard, bluish black, iridescent silicon carbide granule. No reduction characteristics. Oxidizes slowly at 800°C (1472°F). Twelve mesh granule size. Specific gravity 3.20. 5 year industry leading warranty In any laboratory procedure involving the boiling of a liquid, inert and…

High purity, white, amphoteric alundum granule. Extremely hard porous surface. Will not crumble or "powder". Four mesh granule size. Specific gravity 3.97. 5 year industry leading warranty In any laboratory procedure involving the boiling of a liquid, inert and insoluble,…