Hach-Lange SI792 P, SI792x P, SI792x P-FF, SI792x P-PA User Manual - Manual (Page 97)

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Appendix A Buffer tables
Refer to the following tables for pH values of specific buffer sets at
varying temperatures.
• 01 Knick/Mettler-Toledo ( Table 26 ) • 05 NIST standard ( Table 30 )
• 02 Merck, Riedel ( Table 27 ) • 06 Hach buffers ( Table 31 )
• 03 Ciba (94) buffers ( Table 28 ) • 07 WTW buffers ( Table 32 )
• 04 NIST technical ( Table 29 ) • 08 Hamilton Duracal ( Table 33 )
Table 26 Knick/Mettler-Toledo technical buffers
°C pH 2 pH 4 pH 7 pH 9
0 2.03 4.01 7.12 9.52
5 2.02 4.01 7.09 9.45
10 2.01 4.00 7.06 9.38
15 2.00 4.00 7.04 9.32
20 2.00 4.00 7.02 9.26
25 2.00 4.01 7.00 9.21
30 1.99 4.01 6.99 9.16
35 1.99 4.02 6.98 9.11
40 1.98 4.03 6.97 9.06
45 1.98 4.04 6.97 9.03
50 1.98 4.06 6.97 8.99
55 1.98 4.08 6.98 8.96
60 1.98 4.10 6.98 8.93
65 1.99 4.13 6.99 8.90
70 1.99 4.16 7.00 8.88
75 2.00 4.19 7.02 8.85
80 2.00 4.22 7.04 8.83
85 2.00 4.26 7.06 8.81
90 2.00 4.30 7.09 8.79
95 2.00 4.35 7.12 8.77