Delta HD2105.1, Operating Manual

Page: 19 / 50

HD2105
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V2.3
Temperature characteristics of Delta OHM buffer solutions
The 13 standard buffers reported in the table on page 17 are memorized in the instruments with
relevant variations according to temperature: The characteristics of the three Delta Ohm standard
buffers at 6.86pH, 4.01pH and 9.18pH (@25°C) are reported below.
6.86 pH @ 25°C 4.01 pH @ 25°C
°C pH °C pH °C pH °C pH
0 6.98 50 6.83 0 4.01 50 4.06
5 6.95 55 6.83 5 4.00 55 4.07
10 6.92 60 6.84 10 4.00 60 4.09
15 6.90 65 6.85 15 4.00 65 4.10
20 6.88 70 6.85 20 4.00 70 4.13
25 6.86 75 6.86 25 4.01 75 4.14
30 6.85 80 6.86 30 4.01 80 4.16
35 6.84 85 6.87 35 4.02 85 4.18
40 6.84 90 6.88 40 4.03 90 4.20
45 6.83 95 6.89 45 4.05 95 4.23
9.18 pH @ 25°C
°C pH °C pH
0 9.46 50 9.01
5 9.39 55 8.99
10 9.33 60 8.97
15 9.28 65 8.94
20 9.22 70 8.92
25 9.18 75 8.90
30 9.14 80 8.88
35 9.10 85 8.86
40 9.07 90 8.85
45 9.04 95 8.83