29
pH BUFFE
r TE
m
PE
rA
TU
rE DEPENDENCE
11. pH BUFFER TEMPERATURE DEPENDENCE
Temperature has an effect on pH. The calibration buffer solutions are affected by temperature changes
to a lesser degree than normal solutions. During calibration, the instrument will automatically
calibrate to the pH value corresponding to the measured or set temperature.
TEMP
pH BUFFERS
ºC
ºF
4.01
6.00
8.30
10.01
0
32
4.01
6.12
8.48
10.32
5
41
4.00
6.09
8.44
10.24
10
50
4.00
6.06
8.41
10.18
15
59
4.00
6.04
8.37
10.12
20
68
4.00
6.02
8.33
10.06
25
77
4.01
6.00
8.30
10.01
30
86
4.02
5.99
8.27
9.96
35
95
4.03
5.98
8.24
9.92
40
104
4.04
5.97
8.21
9.88
45
113
4.05
5.97
8.18
9.85
During calibration the instrument will display the pH buffer value at 25 ºC.
