Mettler Toledo M400/2(X)H Especificaciones Pagina 107

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Transmitter M400/2(X)H, M400G/2XH 107
© 03 / 2014 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400/2(X)H, M400G/2XH
Printed in Switzerland 30 031 683
19.1.4 NIST standard buffers (DIN and JIS 19266: 2000–01)
Temp (°C) pH of buffer solutions
0
5 1.668 4.004 6.950 9.392
10 1.670 4.001 6.922 9.331
15 1.672 4.001 6.900 9.277
20 1.676 4.003 6.880 9.228
25 1.680 4.008 6.865 9.184
30 1.685 4.015 6.853 9.144
35 1.694 4.028 6.841 9.095
40 1.697 4.036 6.837 9.076
45 1.704 4.049 6.834 9.046
50 1.712 4.064 6.833 9.018
55 1.715 4.075 6.834 8.985
60 1.723 4.091 6.836 8.962
70 1.743 4.126 6.845 8.921
80 1.766 4.164 6.859 8.885
90 1.792 4.205 6.877 8.850
95 1.806 4.227 6.886 8.833
h
NOTE: The pH(S) values of the individual charges of the secondary reference materials are doc-
umented in a certificate of an accredited laboratory. This certificate is supplied with the
respective buffer materials. Only these pH(S) values shall be used as standard values for the
secondary reference buffer materials. Correspondingly, this standard does not include a table
with standard pH values for practical use. The table above only provides examples of pH(PS)
values for orientation.
19.1.5 Hach buffers
Buffer values up to 60 °C as specified by Bergmann & Beving Process AB.
Temp (°C) pH of buffer solutions
0 4.00 7.14 10.30
5 4.00 7.10 10.23
10 4.00 7.04 10.11
15 4.00 7.04 10.11
20 4.00 7.02 10.05
25 4.01 7.00 10.00
30 4.01 6.99 9.96
35 4.02 6.98 9.92
40 4.03 6.98 9.88
45 4.05 6.98 9.85
50 4.06 6.98 9.82
55 4.07 6.98 9.79
60 4.09 6.99 9.76
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