safety products
VICIAG International
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Optimizedabsorbent
of safetyexhaustfilters
Inour continuouswork to improve
ourproducts,VICI hasoptimized the
absorbent for increasedcapacity.
Theexcellent capacityof ournew
absorbent leads to longer lifetimes–
up to10months formethanol and
8months for acetonitrile.*
*Basedon resultsof our tests
(water/organics=50/50;
flow rate1.0ml/minduring theday,
0.5ml/minovernight,
0.1ml/minduringweekends).
Safetyexhaustfilter lifetime
The lifetimeof thefilterdependson:
Compositionof themobilephase
Flow rate
Ambient temperature:ahigher
temperature leads toan increased
vaporpressureof thevolatile
compound
The theoretical lifetimeof anexhaust
filter,dependingon theflow rate, is
shownhere.
tECHTIP
Acetonitileandwater
forman“azeotropic”
mixtureat 85%
acetonitrile. Due to this
physical property, the
vaporof anacetonitrile/
watermixturealways
corresponds to the85/15
mixture. Thisexplains
thenon-linearityof the
lifetime for acetonitrile
compared tomethanol.
additional
applications
Other applications for
safetyfiltersarepossible,
e.g.anexhaustfilter for
theGC split vent.
ContactTechSupport for
more information.
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Data on safety exhaust filters
