On 03 Apr 2006, Sam wrote:

Will wrote:
My vacuum cleaner does not have a HEPA filter and I would like
to get a cleaner that does.

Can someone who understands the physics of HEPA filtration help
me understand HEPA a bit better please. Google is not much of
a friend for this info!


From Google: http://www.eh.doe.gov/hepa/


I got that far with Google but the site is full of heavy duty topics
all of which seem to assume the reader knows the basics of HEPA. I
couldn't find an intro or FAQ or primer there so then I posted to the
newsgroup.