Malvern MPT-2, User Manual, Page: 50 / 85

Chapter 3 Software and Control
Page 3-16 MAN 0318
It should be noted that all prime, fill and clean quantities are determined by the
number of cycles performed, each cycle performs either one complete fill, prime or
clean operation.
Option Description
Clean tab The Clean tab enables the sample tubing and cell to be
flushed and cleaned.
Settings ( Pump and Stirrer ). These allow setting of the stir-
rer and of the pump to circulate the cleaning fluid through
the flow cell. The slider bar or value box can be used to
select the speed and direction; each control will alter to
reflect the other's setting.
Enable stirrer will turn the stirrer
on or off.
Refer to the Maintenance chapter for instructions on use.
Fill tab The Fill tab is used to fill the sample tubing and cell prior to
beginning a measurement. This primes the cell in the same
way as the titrant tubes below. The pump and stirrer controls
work in the same way as described in the Clean tab section.
Refer to the Connection and preparation chapter for
instructions on use.
Prime tab Priming is the process of ensuring that all the titrant delivery
tubes are free of air and full of liquid. Generally this is done
after changing titrants or after the system has not been used
for a time, e.g. overnight.
Each titrant delivery tube can be individually primed, or all
tubes can be primed simultaneously. The coloured indica-
tors on the dialogue match the LED indicators next to the
titrant container, and also the titrant tubing connectors.
Refer to the Connection and preparation chapter for
instructions on use.
pH monitor tab This tab continually reads and displays the current pH of a
sample; either in the sample container fitted to the titrator or
a separate container that the probe is inserted into. The
reading will update every second.
If using a separate container, place the probe in the sample,
then wait for the reading to stabilise before reading the
value.
Note : It is good practice to stir a sample during a pH meas-
urement.
MAN0318-4.0 - MPT-2 Autotitrator-Degasser.book Page 16 Tuesday, September 4, 2012 12:15 PM