Calibrate: Measured Variable, Ph - ProMinent DULCOMARIN 3 Compact Assembly And Operating Instructions Manual

11.1

Calibrate: measured variable, pH

Tab. 16: The following calibration buffers can be used, for example:
Manufacturer
ProMinent ®
NBS ® DIN 19266
DIN 19267
Merck+Riedel ®
Please note the following general rules:
With a 2-point calibration, the difference between the buffers
n
should be at least 2 pH values.
Never calibrate the sensor in the storage bottle, instead always
n
take out the amount of buffer needed and dispose of the
removed buffer after the calibration.
Never pour the buffer back into the storage bottle, but dispose
n
of it.
The device can only work properly if the buffer sol‐
ution used matches the selected, activated buffer
solution. Other buffer solutions, even those with
the same nominal values, may react differently to
temperature. These reactions may result in meas‐
uring errors.
Please also observe the important notes relating to pH calibration
Ä Further information on page 84 .
in
1. Tap on [CAL]
Calibrating
pH value
4
7
9
10
1
4
7
9
1
4
7
9
13
2
4
7
9
12
85