16
ENGLISH
p H p r o b e c a l i b r a t i o n
The following steps show how to calibrate the pH probe. To perform the
operations, you must have two vials of pH 7 and pH 9 buffer solutions of reference (the
solutions are not included in the supply and can be requested separately).
The parameter of the buffer solution (shown on the right of the display) can be
changed using the ARROW keys, if you do not have the buffer solutions corresponding
to the default settings (pH7 and pH9).
pH procedure:
•
Dip the electrode in the pH 7 buffer solution
•
Wait for the value at the left of the screen to stabilise
•
Confirm by pressing OK
•
Wait 90 seconds (according to displayed countdown)
•
Dip the electrode in the pH 9 buffer solution
•
Wait for the value at the left of the screen to stabilise
•
Confirm by pressing OK
•
Wait 90 seconds (according to displayed countdown)
At the end of the calibration, the instrument detects the
PROBE QUALITY
parameter, with the percentages indicating the wear conditions of the probe.
The possible results are:
100%, 75%, 50%, 25%, CALIBRATION ERROR
. The last
parameter means that the calibration was not successful due to an error in the
procedure, or that the probe is to be considered no longer usable.
R x p r o b e c a l i b r a t i o n
The following steps show how to calibrate the Rx probe. To perform the operations,
you must have a vial of 650 mV buffer solution of reference (the solution is not included
in the supply and can be requested separately).
The parameter of the buffer solution (shown on the right of the display) can be
changed using the ARROW keys, if you do not have the buffer solution corresponding
to the default setting (650 mV).
Rx procedure:
•
Dip the electrode in the mV 650 buffer solution
•
Wait for the value at the left of the screen to stabilise
•
Confirm by pressing OK
•
Wait 90 seconds (according to displayed countdown)
At the end of the calibration, the instrument detects the
PROBE QUALITY
parameter,
with the percentages indicating the wear conditions of the probe.
The possible results are:
100%, 75%, 50%, 25%, CALIBRATION ERROR
. The last
parameter means that the calibration was not successful due to an error in the
procedure, or that the probe is to be considered no longer usable.
