| items\Type | Sodium Base Bentonite | Calcium Base Bentonite | |
| First grade | Second grade | ||
| Methyl biue g/100g ≥ |
32
|
32
|
30
|
| Colloid value ml/15g ≥ |
500
|
400
|
48
|
| Swelling value ml/g ≥ |
50
|
20
|
10
|
| PH value |
8.0-9.5
|
8.0-9.5
|
6.5-7.5
|
| Wet pressure strength Kpa ≥ |
50
|
40
|
30
|
| Hot wet tension strength Kpa ≥ |
3.0
|
2.0
|
1.5
|
| Moisture% ≤ |
10
|
10
|
10
|
| Fineneess（pass 200mesh screen）≥ |
95
|
95
|
95
|
| Pakage |
25kg 50kg 1000kg
|
||
