pH

0.2mol/L二甲胂酸鈉（ml）

0.2N HCl(ml)

蒸餾水

5.0

25

23.5

51.5

5.2

25

22.5

52.5

5.4

25

21.5

53.5

5.6

25

19.6

55.5

5.8

25

17.4

57.5

6.0

25

14.8

60.3

6.2

25

11.9

63.1

6.4

25

9.2

65.8

6.6

25

6.7

68.3

6.8

25

4.7

70.3

7.0

25

3.2

71.8

7.2

25

2.1

72.9

7.4

25

1.4

73.6