We can offer Sodium Bentonite, origin Peru, with following specs:

Montmorillonita 71% min.

CaO 1.35%

MgO 2.60%

Na2O 1.70%

K2O 1.99%

Fe2O3 1.28%

Humidity 10% max

Plastic viscosity at 6000 RPM, cp 15.2%

Specific gravity 2.5

Swelling 15% – 25%