Soda Ash | Temperature | |||
30˚C | 60˚C | |||
Alkali | Acid | Alkali | Acid | |
15 | 4/5 | 4 | 4/5 | 4 |
18 | 3/4 | 3 | 4/5 | 4/5 |
20 | 4/5 | 3/4 | 4/5 | 4/5 |