What color is the normal appearance of bentonite?
Bentonite pale pink to reddish brown powder, uniform size, no caking, no sand and other impurities. "Water arsenic content of >50% <5% <0.003% montmorillonite million swelling capacity of >3ml/g lead <0.002%" water "sense of unqualified water arsenic content <40% >0.003% >7% 000 montmorillonite swelling capacity <1.5ml/g"
It has a lot to do with the local quality, but remember it is a kind of loess. It may be dark brown. "Sensory unqualified" too general, and personally feel that only to deviate from the Yellow Brown can be, the particle size must be qualified. There are a lot of light tan here in Jiangxi. Physical and chemical indicators, expansion must be achieved.
