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Cleaning the membrane:
Every membrane is carefully brushed with a
very
soft brush with distilled
water.
The
water
with the dissolved
dirt
tan then be
removed with very
soft blott ing-Paper. This
procedure
has
to
be
repeated several
times unt
il
the capsule
is really
clean. Those capsules which cannot be
cleaned by
this method have to be exchanged.
Cleaning the membrane by means of
solvents is not allowed
These solvents
are too
thinly liquid and fugitive.
For careful cleaning then no time remains and inhomogenit
on the membrane;
ives
may
rema in
solvents could
also transport dirt
below the membrane fixing
rinqs:
solvents tan
also cool
down the
membrane strongly
and then humidity tan
condense below the membrane which cannot be
removed from there.
Besides that
the
use of solvents
bears
the
risk
that the mechanical tension
of the membrane is influenced.