Hanna Instruments HI 2221 User Manual
Page 17
17
pppppH BUFFER TEMPERATURE
H BUFFER TEMPERATURE
H BUFFER TEMPERATURE
H BUFFER TEMPERATURE
H BUFFER TEMPERATURE
DEPENDENCE
DEPENDENCE
DEPENDENCE
DEPENDENCE
DEPENDENCE
The 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.
During calibration the instrument will display the pH buffer value at 25 ºC.
P
M
E
T
S
R
E
F
F
U
B
H
p
C
º
F
º
8
6
.
1
1
0
.
4
6
8
.
6
1
0
.
7
8
1
.
9
1
0
.
0
1
5
4
.
2
1
0
2
3
7
6.
1
1
0.
4
8
9.
6
3
1.
7
6
4.
9
2
3.
0
1
8
3.
3
1
5
1
4
7
6.
1
0
0.
4
5
9.
6
0
1.
7
9
3.
9
4
2.
0
1
8
1.
3
1
0
1
0
5
7
6.
1
0
0.
4
2
9.
6
7
0.
7
3
3.
9
8
1.
0
1
9
9.
2
1
5
1
9
5
7
6.
1
0
0.
4
0
9.
6
5
0.
7
7
2.
9
2
1.
0
1
0
8.
2
1
0
2
8
6
8
6.
1
0
0.
4
8
8.
6
3
0.
7
2
2.
9
6
0.
0
1
2
6.
2
1
5
2
7
7
8
6.
1
1
0.
4
6
8.
6
1
0.
7
8
1.
9
1
0.
0
1
5
4.
2
1
0
3
6
8
8
6.
1
2
0.
4
5
8.
6
0
0.
7
4
1.
9
6
9.
9
9
2.
2
1
5
3
5
9
9
6.
1
3
0.
4
4
8.
6
9
9.
6
1
1.
9
2
9.
9
3
1.
2
1
0
4
4
0
1
9
6.
1
4
0.
4
4
8.
6
8
9.
6
7
0.
9
8
8.
9
8
9.
1
1
5
4
3
1
1
0
7.
1
5
0.
4
3
8.
6
8
9.
6
4
0.
9
5
8.
9
3
8.
1
1
0
5
2
2
1
1
7.
1
6
0.
4
3
8.
6
8
9.
6
1
0.
9
2
8.
9
0
7.
1
1
5
5
1
3
1
2
7.
1
8
0.
4
4
8.
6
8
9.
6
9
9.
8
9
7.
9
7
5.
1
1
0
6
0
4
1
2
7.
1
9
0.
4
4
8.
6
8
9.
6
7
9.
8
7
7.
9
4
4.
1
1
5
6
9
4
1
3
7.
1
1
1.
4
4
8.
6
9
9.
6
5
9.
8
6
7.
9
2
3.
1
1
0
7
8
5
1
4
7.
1
2
1.
4
5
8.
6
9
9.
6
3
9.
8
5
7.
9
1
2.
1
1
5
7
7
6
1
6
7.
1
4
1.
4
6
8.
6
0
0.
7
1
9.
8
4
7.
9
0
1.
1
1
0
8
6
7
1
7
7.
1
6
1.
4
7
8.
6
1
0.
7
9
8.
8
4
7.
9
0
0.
1
1
5
8
5
8
1
8
7.
1
7
1.
4
7
8.
6
2
0.
7
7
8.
8
4
7.
9
1
9.
0
1
0
9
4
9
1
9
7.
1
9
1.
4
8
8.
6
3
0.
7
5
8.
8
5
7.
9
2
8.
0
1
5
9
3
0
2
1
8.
1
0
2.
4
9
8.
6
4
0.
7
3
8.
8
6
7.
9
3
7.
0
1