Metrohm 788 IC Filtration Sample Processor - Manual (Page 26)

2 Installation
788 IC Filtration Sample Processor
18
6 Rinse ultra-filtration cell
x Before rinsing the cell, please finish all tubing connections as
described in the following sections.
x Every time the filtration membrane is changed, the remaining
air in the cell and tubings has to be removed. This can be
done by rinsing with ultrapure water.
x A completely installed 788 IC Filtration Sample Processor with
ultra-filtration cell is required for processing the following
steps. The rinsing solution (e.g. ultrapure water) is stored in a
300 mL PE bottle on the special beaker position 1. The 788 IC
Filtration Sample Processor is online and in normal state. The
pump is switched of (display: 'PUMP–') and the 788 is ready
for use (display: 'ready').
x Turn the sample rack to position the beaker with the rinsing
solution under the needle by pressing followed by
choosing 'spec.1' with . x Lower the lift into rinse position with and
x Lower the lift into rinse position with and
'rinse'
x Turn on the pump by pressing . All connected
tubings and the ultra-filtration cell will be rinsed.
x After adequate time (e.g. 5 min.), switch off the Pump
() and raise the lift to its rest position by pressing
.