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Temp. 1.68 4.01
6.87 9.18
12.45
NIST buffers
0°C 1.666 pH 4.003 pH
6.984 pH 9.464 pH
13.423 pH
5°C 1.668 pH 3.999 pH
6.951 pH 9.395 pH
13.207 pH
10°C 1.670 pH 3.998 pH
6.923 pH 9.332 pH
13.003 pH
15°C 1.672 pH 3.999 pH
6.900 pH 9.276 pH
12.810 pH
20°C 1.675 pH 4.002 pH
6.881 pH 9.225 pH
12.627 pH
25°C 1.679 pH 4.008 pH
6.865 pH 9.180 pH
12.454 pH
30°C 1.683 pH 4.015 pH
6.853 pH 9.139 pH
12.289 pH
40°C 1.694 pH 4.035 pH
6.838 pH 9.068 pH
11.984 pH
50°C 1.707 pH 4.060 pH
6.833 pH 9.011 pH
11.705 pH
60°C 1.723 pH 4.091 pH
6.836 pH 8.962 pH
11.449 pH
70°C 1.743 pH 4.126 pH
6.845 pH 8.921 pH
80°C 1.766 pH 4.164 pH
6.859 pH 8.885 pH
Temp. 3 M KCl
Redox standard
0°C 224 mV
5°C 219 mV
10°C 214 mV
15°C 212 mV
20°C 204 mV
25°C 199 mV
30°C 194 mV
35°C 189 mV
40°C 184 mV
45°C 179 mV
50°C 174 mV
Temp. 4.00 7.00
9.21 10.01
Standard buffers
5°C 3.99 pH 7.08 pH
9.45 pH 10.24 pH
10°C 3.99 pH 7.06 pH
9.38 pH 10.18 pH
20°C 3.99 pH 7.02 pH
9.26 pH 10.06 pH
25°C 4.00 pH 7.00 pH
9.21 pH 10.01 pH
30°C 4.01 pH 6.99 pH
9.16 pH 9.87 pH
40°C 4.03 pH 6.98 pH
9.06 pH 9.89 pH
50°C 4.06 pH 6.97 pH
8.99 pH 9.83 pH
60°C 4.09 pH 6.98 pH
8.93 pH 9.79 pH
Temp. 0.01 M 0.1 M
1 M
Conductivity standards
0°C 776 µS 7.15 mS
65.4 mS
5°C 896 µS 8.22 mS
74.1 mS
10°C 1020 µS 9.33 mS
83.2 mS
15°C 1147 µS 10.48 mS
92.5 mS
20°C 1278 µS 11.67 mS
102.1 mS
25°C 1413 µS 12.88 mS
111.8 mS
30°C 1552 µS 14.12 mS
121.7 mS
