16 Jul
1998
16 Jul
'98
3:02 a.m.
At 18:51 14-07-98 +0000, you wrote:
Do you remember the brand-name by any chance ? I have a couple of Filter Queen
vacuums that have 2 filters and supposedly "cleans" the air emitted via an
exhaust port that can be used for vapor or spray painting accessories.
ciao lary
lwalker(a)interlog.com
Allison (>>) and Tony (>) wrote:
BTW, I have two questions. What does HEPA stand for? And (Christian
A HEPA filter is: High Efficiancy Particulate Air filter. A HEPA filter is
built so that 9.97% of particles 0.3 micron and larger are removed from the
air passing through. You see HEPA filters more and more in consumer related
things (at least I have in the States). Example: Air filters in many modern
automobiles, possibly all autos, use a HEPA filter for engine air intake
filtering. Clearances between engine parts are closer nowadays which
improves engine performance and efficiency plus smaller engines are
stressed harder in relatively large modern cars, both thus requiring really
clean air intake.
Also, I think I've seen an advertisement for a fancy grade household vacuum
cleaner advertising it has a HEPA filter on its exhaust. Less allergens
blown about. We use Nilfisk-brand cleanroom vacuum cleaners at work. Made
in Denmark I believe. Cost around US$1000 each but they're meant for use
*in* cleanrooms and *must* not throw junk about from their exhaust.