NIST pH buffers
Temp.
1.68
0°C
1.666
5°C
1.668
10°C
1.670
15°C
1.672
20°C
1.675
25°C
1.679
30°C
1.683
40°C
1.694
50°C
1.707
60°C
1.723
70°C
1.743
80°C
1.766
Standard pH buffers
Temp.
2.00
5°C
1.85
10°C
1.89
20°C
1.96
25°C
2.00
30°C
2.03
40°C
2.08
50°C
2.12
60°C
2.14
Conductivity standards
Temp.
0.01 M
0°C
0.776
5°C
0.896
10°C
1.020
15°C
1.147
20°C
1.278
25°C
1.413
30°C
1.552
35°C
1.694
40°C
1.839
Redox standards
Temp.
124
0°C
156
5°C
148
10°C
141
15°C
135
20°C
130
25°C
124
30°C
122
35°C
116
40°C
99
4.01
6.87
9.18
4.003
6.984
9.464
3.999
6.951
9.395
3.998
6.923
9.332
3.999
6.900
9.276
4.002
6.881
9.225
4.008
6.865
9.180
4.015
6.853
9.139
4.035
6.838
9.068
4.060
6.833
9.011
4.091
6.836
8.962
4.126
6.845
8.921
4.164
6.859
8.885
4.00
7.00
9.21
3.99
7.08
9.45
3.99
7.06
9.38
3.99
7.02
9.26
4.00
7.00
9.21
4.01
6.99
9.16
4.03
6.98
9.06
4.06
6.97
8.99
4.09
6.98
8.93
0.1 M
1 M
(mS/cm)
7.15
65.4
8.22
74.1
9.33
83.2
10.48
92.5
11.67
102.1
12.88
111.8
14.12
121.7
15.38
131.7
16.67
142.1
358
(mV)
388
381
376
370
364
358
352
346
340
12.45
13.423
13.207
13.003
12.810
12.627
12.454
12.289
11.984
11.705
11.449
10.01
12.00
10.24
12.56
10.18
12.35
10.06
12.14
10.01
12.00
9.87
11.89
9.89
11.71
9.83
11.52
9.79
11.33
14