Voith BTG Mutek PCD-06, Operation Manual, Page: 35 / 60

© BTG 2021 Operation Manual Mütek
TM
PCD-06 33
V. Measuring
5.5 Fill sample into the measuring cell
Preparation
Information
Since both electrodes inside the measuring cell must
be covered with liquid, the sample volume should be
at least 10 ml. To precisely dose the sample volume
for charge calculation, weigh in the sample or use a
measuring pipette.
Information
Good reproducibility of results is only achieved if the
sample is appropriately homogenized for quantita-
tive sampling.
• Insert the displacement piston in the measuring cell.
• Fill a sample into the measuring cell.
• Move the measuring cell along the guide up to the
stop.
• The piston will automatically be lifted and locked.
- Assure that the marking facing the front
Fig. 5-2 Measuring cell and displacement piston
• If applicable, install pH electrode in the measuring
cell (see Fig. 5-4 "Insert pH electrode", page 34).
Hint
The pH electrode must immerse in the sample solu-
tion. Therefore it is necessary to use an increased
sample volume of 30 ml for isoelectric point measu-
rements. Use more sample material and do not
dilute the sample with water!
When just one pH value has to be measured (no pH
curve or IEP measurement) the pH of the 10 ml
sample can be measured outside before filling into
the measuring cell.
Marking facing
the front