12
4.
Allow sufficient time for the display to stabilize. The instrument
will display the mV value of the sample.
pH BUFFERS
The temperature coefficient of pH calibration buffers 4.00, 4.01, 6.86,
7.00, 9.18 and 10.01 pH are stored inside the instrument. The
buffers used to calibrate the instrument must exhibit the same
temperature characteristics as the stored values.
Temperature coefficient of the pH buffers
℃
4.00
6.86
9.18
4.01
7.00
10.01
0
4.01
6.98
9.46
4.01
7.11
10.32
5
4.00
6.95
9.39
4.01
7.08
10.25
10
4.00
6.92
9.33
4.00
7.06
10.18
15
4.00
6.90
9.28
4.00
7.03
10.12
20
4.00
6.88
9.23
4.00
7.01
10.06
25
4.00
6.86
9.18
4.01
7.00
10.01
30
4.01
6.85
9.14
4.01
6.98
9.97
35
4.02
6.84
9.10
4.02
6.98
9.93
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
±
0.01pH.
]
