28
40
4.03
6.84
9.07
4.03
6.97
9.89
45
4.04
6.83
9.04
4.04
6.97
9.86
50
4.06
6.83
9.02
4.06
6.97
9.83
55
4.07
6.83
8.99
4.08
6.97
9.80
60
4.09
6.84
8.97
4.10
6.98
9.78
【
Note
】
:
The actual reading of the instrument can differ from the values shown by
±0.01 pH.