... Liufangzi Brand Natural Sodium BentoniteBentonite Swelling Index ,ml/2g ,Chinese National Standard ≥24 Tested Report 24 ,Line Item QualifiedMethylene ... Report 32,Line Item QualifiedFilter Loss Volume ,ml,Chinese National Standard <18,Tested Report 16.6,Line Item ... QualifiedBentonite Durability ,ml/2g,Chinese National Standard ≥20 ,Tested Report 20,Line Item QualifiedSubstance ...