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Table 5 pH, swelling capacity (SC), sedimentation volumes (SV) of samples and pharmacopoeia specification

From: Characterization and purification of Algerian natural bentonite for pharmaceutical and cosmetic applications

  RBN RBN-1 Pharmacopoeia
specification
pH values (2 g/100 mL) 9.12 9.30 9.0–10.5
SC (2 g/100 mL) 5 mL 25 mL ≥ 22 mL
SV (6 g/200 ml) < 2 mL  < 2 mL  ≤ 2 mL