wtw Multi 9420 - Buffer Sets for Calibration

Settings Multi 9420
86 ba75964e04 04/2015
9.1.2 Buffer sets for calibration
You can use the buffer sets quoted in the table for an automatic calibration. The
pH values are valid for the specified temperature values. The temperature
dependence of the pH values is taken into consideration during the calibration.
No. Buffer set * pH values at
1 ConCal Any Any
2 NIST/DIN
DIN buffers according to DIN 19266
and NIST Traceable Buffers
1.679
4.006
6.865
9.180
12.454
25 °C
3 TEC
WTW Technical buffers
2.000
4.010
7.000
10.011
25 °C
4 Merck 1* 4.000
7.000
9.000
20 °C
5 Merck 2 * 1.000
6.000
8.000
13.000
20 °C
6 Merck 3 * 4.660
6.880
9.220
20 °C
7 Merck 4 * 2.000
4.000
7.000
10.000
20 °C
8 Merck 5 * 4.010
7.000
10.000
25 °C
9 DIN 19267 1.090
4.650
6.790
9.230
25 °C
10 Mettler Toledo USA * 1.679
4.003
7.002
10.013
25 °C
11 Mettler Toledo EU * 1.995
4.005
7.002
9.208
25 °C