Metrohm 914 pH / Conductometer - Manual (Page 88)

7.1 Saved buffer series
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78 ￭￭￭￭￭￭￭￭
pH Meter/Conductometer
7.1.12 Fluka
Table 17 Fluka buffer solutions
Temp.
(°C)
Fluka
pH
4.000
pH
7.000
pH
9.000
0 4.030 7.130 9.240
5 4.025 7.090 9.175
10 4.020 7.050 9.110
15 4.010 7.020 9.055
20 4.000 7.000 9.000
25 4.000 6.990 8.965
30 4.000 6.980 8.930
35 4.000 6.975 8.895
40 4.000 9.970 8.860
45 4.000 6.965 8.830
50 4.000 6.960 8.800
55 4.000 6.960 8.775
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
NOTE
Update
The values of the individual buffers with the corresponding tempera-
tures are kept up to date as far as possible.
However, they may be changed by the respective manufacturers.