Table 4  Modified parameters, basal spacings and surface area (BET) values of series 1 samples.
Method  Relation of Clay/Water (g/mL)  Mass of Clay  Amount of Water in Clay Suspension  d001 (Å)  SBET (m2/g)  Observations
Natural  -  -  -  15.1  58  -
Traditional  1/100  3 g  300 mL  17.8  234  -
1  1/10  10 g  100 mL  16.8  142  -
2  1/50  10 g  500 mL  17.5  217  -
3  1/100  10 g  1000 mL  17.9  216  -
4  1/100  10 g  1000 mL  17.8  150  −500 mL
5  1/100  10 g  1000 mL  17.3  149  −900 mL