YSI 60 - Manual (Page 32)

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14. 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