Metrohm 900 - Stored Buffer Series for Ph Calibration; Metrohm

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32 Appendix
900 Touch Control
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499
32.8 Stored buffer series for pH calibration
The temperature-dependent pH values of several common pH buffers are
stored in the Touch Control for automatic buffer recognition during pH
calibration. In addition to the Metrohm buffer solutions, other reference
buffers and technical buffers are also included in the tables.
The following tables provide an overview of the stored pH(T) series.
pH values printed in bold are the values for the reference temperature of
the respective buffer set.
pH values printed in italics are interpolated or extrapolated values, all the
others correspond to the manufacturer's specifications.
32.8.1 Metrohm
Table 23
Metrohm buffer solutions
Temp.
(°C)
Metrohm
pH
4.00
pH
7.00
pH
9.00
0 3.99 7.11 9.27
5 3.99 7.08 9.18
10 3.99 7.06 9.13
15 3.99 7.04 9.08
20 3.99 7.02 9.04
25 4.00 7.00 9.00
30 4.00 6.99 8.96
35 4.01 6.98 8.93
40 4.02 6.98 8.90
45 4.03 6.97 8.87
50 4.04 6.97 8.84
55 4.06 6.97 8.81
60 4.07 6.97 8.79
65 4.09 6.98 8.76
70 4.11 6.98 8.74
75 4.13 6.99 8.73
80 4.15 7.00 8.71
85 4.18 7.00 8.70