Xylem TitroLine 7800 Mode D'emploi page 180

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The titrator will ask you to rinse the electrode and immerse it successively into 2 or 3 buffers (Fig. 56).
Fig. 56
st nd rd
The 1 buffer is started with <START>. The 2 and 3 buffers (optional) are to be started with <ENTER>/<OK>.
During calibration (Fig. 57 - Fig. 59), you can view the current mV and temperature values of the buffer:
Fig. 57
Fig. 58
Fig. 59