32.8 Stored buffer series for pH calibration
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504
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900 Touch Control
Temp.
(°C)
Fluka
pH
4.000
pH
7.000
pH
9.000
60 4.000 6.960 8.750
65 4.000 6.965 8.730
70 4.000 6.970 8.710
75 4.000 6.975 8.690
80 4.000 6.980 8.670
85 4.000 6.990 8.655
90 4.000 7.000 8.640
95 4.000 7.010 8.620
NOTICE
Update
The values of the individual buffers with the corresponding tempera-
tures are kept as up to date as possible.
However, they may be changed by the respective manufacturers.
32.8.6 Mettler Toledo
Table 28
Mettler Toledo buffer solutions
Temp.
(°C)
Mettler Toledo
pH
2.00
pH
4.01
pH
7.00
pH
9.21
pH
11.00
0 2.03 4.01 7.12 9.52 11.90
5 2.02 4.01 7.09 9.45 11.72
10 2.01 4.00 7.06 9.38 11.54
15 2.00 4.00 7.04 9.32 11.36
20 2.00 4.00 7.02 9.26 11.18
25 2.00 4.01 7.00 9.21 11.00
30 1.99 4.01 6.99 9.16 10.82
35 1.99 4.02 6.98 9.11 10.64
40 1.98 4.03 6.97 9.06 10.46
45 1.98 4.04 6.97 9.03 10.28
50 1.98 4.06 6.97 8.99 10.10