User Guide

Instruction Manual CyberScan pH 11 / 110
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14.3 Standard pH Buffers
The following table shows the various pH values at different temperature of the
solution during calibration.
Temperature
(ºC)
pH 1.68
(oxalate)
pH 4.01
(phthalate)
pH 7.00
(neutral
Phosphate)
pH 10.01
(carbonate)
pH 12.45
(Saturated
Calcium
Hydroxide
Solution)
0 1.67 4.01 7.12 10.32 13.43
5 1.67 4.01 7.09 10.25 13.21
10 1.67 4.00 7.06 10.18 13.00
15 1.67 4.00 7.04 10.12 12.81
20 1.68 4.00 7.02 10.06 12.63
25 1.68 4.01 7.00 10.01 12.45
30 1.69 4.01 6.99 9.97 12.29
35 1.69 4.02 6.98 9.93 12.13
40 1.70 4.03 6.97 9.89 11.99
45 1.70 4.04 6.97 9.86 11.84
50 1.71 4.06 6.97 9.83 11.70
55 - 4.08 6.97 9.81 -
60 - 4.10 6.98 9.79 -
70 - 4.12 6.99 9.76 -
80 - 4.16 7.00 9.74 -
90 - 4.20 7.02 9.73 -