testo 252 Bedienungsanleitung Seite 89

TESTO
BUFFER
Automatic calibration with specified buffer solutions
In the following example we assume that you have
connected a pH combination electrode (without
temperature sensor).
When a temperature sensor is connected
(integrated or separate) the manual
entry/correction of the temperature value is no
longer necessary. The use of the instrument is thus
obviously facilitated.
Never calibrate in buffer bottles! Do not pour
used buffer solution back into the storage
bottle! Never leave buffer solutions open
during storage!
Rinse electrodes in water after each
calibration and carefully blot dry.
Rinse the electrode in water. Carefully blot the
electrode dry and place the electrode in the
buffer solution (Testo buffer!).
Switch the measuring instrument on.
You are now in the measuring mode. Select the
calibration (CAL) menu with the page key.
Confirm the choice of menu with Enter.
pH measurement
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