10
pH BUFFER TEMPERATURE DEPENDENCE
Temperature has an effect on pH. The calibration buffer
solutions are affected by temperature changes to a lesser
degree than normal solutions.
For manual temperature calibration please refer to the following chart.
For instance, if the buffer temperature is 25°C, the display
should show pH 4.01, 7.01 or 10.01 at pH 4, 7 or 10
buffers, respectively.
At 20°C, the display should show pH 4.00, 7.03 or 10.06.
The meter reading at 50°C will then be 4.06, 6.98 or 9.82.
PMET SREFFUBHp
Cº Fº 10.4 68.6 10.7 81.9 10.01
0 23 10.4 89.6 31.7 64.9 23.01
5 14 00.4 59.6 01.7 93.9 42.01
01 05 00.4 29.6 70.7 33.9 81.01
51 95 00.4 09.6 50.7 72.9 21.01
02 86 00.4 88.6 30.7 22.9 60.01
52 77 10.4 68.6 10.7 81.9 10.01
03 68 20.4 58.6 00.7 41.9 69.9
53 59 30.4 48.6 99.6 11.9 29.9
04 401 40.4 48.6 89.6 70.9 88.9
54 311 50.4 38.6 89.6 40.9 58.9
05 221 60.4 38.6 89.6 10.9 28.9
55 131 80.4 48.6 89.6 99.8 97.9
06 041 90.4 48.6 89.6 79.8 77.9
56 941 11.4 48.6 99.6 59.8 67.9
07 851 21.4 58.6 99.6 39.8 57.9
57 761 41.4 68.6 00.7 19.8 47.9
08 671 61.4 78.6 10.7 98.8 47.9
58 581 71.4 78.6 20.7 78.8 47.9
09 491 91.4 88.6 30.7 58.8 57.9
59 302 02.4 98.6 40.7 38.8 67.9
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