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