From: Characterization and purification of Algerian natural bentonite for pharmaceutical and cosmetic applications
Sample
CEC (meq/100Â g)
SSA (m2/g)
Pb (ppm)
As (ppm)
Apparent viscosity(cP)
Plastic viscosity (cP)
RBN
61.76
474.64
< 0.04
 < 0.01
11
7
RBN-1
88.20
677.71
< 0.01
36
15.5