LuckyWinner
Hazard to Others
Posts: 163
Registered: 27-8-2018
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What Filter to use for Fumehood?
the search engine was used but I could not find a clear answer.
my DIY fumehood is processing all the usual chemical fumes that occur in a regular lab.
hcl
h2so4
kmno4
naoh
formaldehyde
THF
diethyl ether
methanol
ethanol
what type of filter is recommended to scrub volatile particles that escape from
the glassware.
the fan exhaust is already going out through a window but I want the fumes to be odorless clean air.
I assume the filter is placed before the fan but what exact type of filter is recommended?
activated carbon, HEPA,... ?
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Sulaiman
International Hazard
Posts: 3695
Registered: 8-2-2015
Location: 3rd rock from the sun
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I believe that you should have scrubbers attached to your glassware
to remove vapours before they can be released into the fume hood.
Cheaper than trying to fit some kind of universal filter
that would have to pass the full airflow and filter it.
Your fan should be the last in line, just before the exit
that way any leaks in your ducting will draw air into the ducting and be exhausted via the fan,
rather than potentially leaking your exhaust fumes into your environment.
CAUTION : Hobby Chemist, not Professional or even Amateur
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