Metrohm 781 pH/Ion Meter - Manual (Page 165)

9 Annex
780/781 pH/Ion Meter, Manual
155
Merck CertiPUR (25 °C)
Temp.
(°C)
MerC4.01 MerC7.00 MerC9.00 MerC10.00
pH 4.01 pH 7.00 pH 9.00 pH 10.00
0 - - - -
5 4.00 7.09 9.22 10.22
10 4.00 7.06 9.16 10.16
15 4.00 7.04 9.10 10.10
20 4.00 7.02 9.05 10.05
25 4.01 7.00 9.00 10.00
30 4.01 6.98 8.96 9.94
35 4.03 6.98 8.93 9.90
40 4.03 6.97 8.89 9.86
45 4.05 6.97 8.87 9.80
50 4.06 6.97 8.84 9.73
55 - - - -
60 - - - -
65 - - - -
70 - - - -
75 - - - -
80 - - - -
85 - - - -
90 - - - -
95 - - - -
When using Merck CertiPUR (20 °C) buffers, you have to select the buffer type "Merck Titrisol".