NO.

1

2

3

4

5

6

7

8

9

10

11

Sodium sulfate

(g/L)

original solution

10

30

50

70

100

150

200

250

300

350

Tank pressure

25.2

28.0

26.4

25.3

24.8

23.3

22.1

21.3

21.3

21.3

21.7