
Transmitter M400/2(X)H, M400G/2XH 105
© 03 / 2014 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400/2(X)H, M400G/2XH
Printed in Switzerland 30 031 683
19 Buffer tables
M400 transmitters have the ability to do automatic pH buffer recognition. The following tables
show different standard buffers that are automatically recognized.
19.1 Standard pH buffers
19.1.1 Mettler-9
Temp (°C) pH of buffer solutions
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 1.98 4.13 6.99 8.90
70 1.99 4.16 7.00 8.88
75 1.99 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
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