[pure-silver] Re: HEPA Filter Info
- From: photodogden <photodogden@xxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 15 Oct 2004 01:20:34 +0100
My HEPA filter consists, essentially, of a 2'x4' x18" box containing a
powerful fan, sucking in air through a coarse pre-filter and forcing it out
through a pleated paper filter about 4" deep and the full 2'x4' in area.
This removes all particulate matter from below bacterial size. One of a
flood damaged pair I saved from the skip, it's mounted in a corner of my
darkroom about 2' above the bench, covered here with a sheet of plate glass,
blowing a stream of dust free air downwards. A horizontal arrangement would
probably work as well. Something similar from a laboratory supplier would
now be very expensive as they have to reach strict specifications. I have
no idea what is commercially available for less stringent requirements.
David Ogden
On 13/10/04 5:53 pm, "Adrienne Moumin" <photowonder2010@xxxxxxxxxxx> wrote:
> I'm glad this discussion is occurring just now, as my darkroom construction
> will begin in a few weeks. (I expect this will be only one I will be
> building in my lifetime, so I don't want to mess up anything important & be
> sorry later!)
>
> So I'd be appreciative if you could say more about this filter, does it go
> on the supply duct behind the vent cover, or is it a completely separate
> unit?
>
> Thanks,
> Adrienne Moumin
> (posting to this "new" pure-silver for the very first time & hoping it gets
> thru!)
>
>
>
>> From: "Ron Klein" <rskmd83@xxxxxxxxxxxx>
>> Subject: [pure-silver] Re: Anti-static devices
>> Date: Tue, 12 Oct 2004 09:30:33 -0400
>>
>> I am glad someone braught up the dust issue. I just put a HEPA filter in my
>> darkroom and it looks like it has solved much of my dust problem.No dust on
>> drying film. I hope sheet film loaded into film holders will also now be
>> dust free.
>>
>
>
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