BENTONITE Natural Sodium Bentonite Swelling 18min Specific viscosity 1.16min Water absorption rate 24h 450-550 Swelling index 30-33 Natural Calcium Bentonite Water absorption rate 24h 350-400 Swelling index 15-18.5 Artificial Sodium-ioned Bentonite Swelling20min Water absorption rate 24h500min We can also supply nonmetal minerals such as feldspar, vermiculite, pumice, dolomite, argil, maifanshi, peatmoss, zeolite, calcite, silica stone etc.
