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15. Appendix C - pH Buffer Values
YSI pH 4, 7 and 10 Buffer Solutions: 3821, 3822, 3823
The following table lists the values of YSI pH buffer solutions at various temperatures.
Temperature
pH 4
pH 7
pH 10
0°C
4.01
7.13
10.34
5°C
4.00
7.10
10.26
10°C
4.00
7.07
10.19
15°C
4.00
7.05
10.12
20°C
4.00
7.02
10.06
25°C
4.01
7.00
10.00
30°C
4.01
6.99
9.94
35°C
4.02
6.98
9.90
40°C
4.03
6.97
9.85
50°C
4.06
6.97
9.78
60°C
4.09
6.98
9.70
NIST pH 4.01, 6.86 and 9.18 Buffers: SRM 185g, SRM 186-Ie/IIe, SRM 187c
The following table lists the values of NIST pH buffer solutions at various temperatures.
Temperature
pH 4.01
pH 6.86
pH 9.18
0°C
4.005
6.984
9.463
5°C
4.003
6.950
9.395
10°C
4.001
6.924
9.333
15°C
4.002
6.899
9.277
20°C
4.003
6.879
9.226
25°C
4.005
6.863
9.180
30°C
4.010
6.852
9.139
35°C
4.020
6.844
9.102
37°C
4.025
6.842
N/A
40°C
4.033
6.840
9.070
45°C
4.047
6.837
9.042
50°C
4.061
6.836
9.018
