Important Notes - Sartorius Sartolab-P20 Instructions D'utilisation

2. Important Notes

– The Sartolab -P20 units are constructed,
®
so that filtration may only be performed in
one direction. The inlet side is labeled
with a "IN".
– When handling the units, make sure to
prevent contamination of the filtrate
outlet, or the mounted filling bell.
– If the filtrate flow rate drops below the
required rate (the filter is blocked),
replace the Sartolab
one.
– Sartolab -P20 units are for single use
®
only – do not re-use them.
-P20 with a new
®
Caution
When filtering solutions containing
surface-active substances (organic solvent
components, alcohols), the water penetra-
tion pressure of the PTFE membrane
(applys to Sartolab
®
18068) may decrease so much that liquid
seeps out of the automatic vents. If
necessary, rinse these substances out of
the PTFE membrane first, then dry the unit
in a drying oven overnight at 105°C.
Avoid unnecessary air intake during the
filtration by ensuring, for example, that the
inlet end of the intake tubing is kept below
the surface of the liquid being filtered.
Otherwise, particularly when using
Sartolab -P20 Plus, a pocket of air may
®
build up above the membrane, resulting in
partial or complete "blocking" of the
membrane. Should this occur, however,
pump all of your solution out of the system
first, then continue the filtration run as
described in step 4.7.
-P20 18052, 18053,
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