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Amazon Shop: Agar, HEPA Filter, Laminar Flow Hood

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OfflineFluxburn
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Uv light Vs. Hepa filtering
    #3733417 - 02/05/05 01:52 AM (12 years, 9 months ago)

I am working on getting a hepa flow hood, but this interesting technology has be brought to my attention, the Medical UV cleaning of air. Has anyone used this or heard of its effectiness? Supposedly you can just run these uv lights in the air duct stream and it kills 99.99% of bilological contaminates. Yet hepa filters do 99.97% of bacterica contaminates or are biological contaminates and bactericial contaminates classified along similar means?

I am rather confused here on this topic. If this uv lighting worked, couldn't you just run this light under your working area?


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Invisibleagar
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Re: Uv light Vs. Hepa filtering [Re: Fluxburn]
    #3733473 - 02/05/05 02:03 AM (12 years, 9 months ago)

UV light strong enough to STERILZE will F/U your eyes, skin, cause cancer & other BS.

If it is contained, as in well sheilded..... it works great, but you still need filtration. Best is hepa filter run into UV light sheilded in metal ductwork.


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Offlinediscoabe
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Re: Uv light Vs. Hepa filtering [Re: agar]
    #3733500 - 02/05/05 02:07 AM (12 years, 9 months ago)

Also percentage of filtration is measured in microns, so 99.97 at .1 microns is better than 99.99 at .3 so it depends on how small it can filter to.


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OfflineFluxburn
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Re: Uv light Vs. Hepa filtering [Re: discoabe]
    #3740727 - 02/06/05 03:15 PM (12 years, 9 months ago)

ok cool, so together with hepa it is over kill cool.... man its hard to justify some expenses though


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Offlineprototypical_man
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Re: Uv light Vs. Hepa filtering [Re: Fluxburn]
    #3741308 - 02/06/05 05:45 PM (12 years, 9 months ago)

yeah I totally messed up my eyes that way..


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Offlinethedman
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Re: Uv light Vs. Hepa filtering [Re: prototypical_man]
    #3741334 - 02/06/05 05:51 PM (12 years, 9 months ago)

i have jacked my eyes on a uv bulb,felt like cats scatching my eyes for about 24 hours.I stay away from them now.


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OfflineKaptKid
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Re: Uv light Vs. Hepa filtering [Re: thedman]
    #3741580 - 02/06/05 06:55 PM (12 years, 9 months ago)

How long(in Ft.)would a contam have to travel through Uv light at the speed of a flowhood to do any good?


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Offlinehyphae
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Re: Uv light Vs. Hepa filtering [Re: Fluxburn]
    #3742071 - 02/06/05 08:56 PM (12 years, 9 months ago)

UV lights are used in combination with HEPA's to sterilize utensils prior to procedure then shut off during the procedure. This sterilizes the utensils which the HEPA cannot do understand? All in all a very nice setup! GL


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Offlinegsmith
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Re: Uv light Vs. Hepa filtering [Re: hyphae]
    #3744544 - 02/07/05 10:37 AM (12 years, 9 months ago)

ditto to everything said before (especially agar's idea, except I would put the UV before the intake to prevent UV leak into the work area, and also to preserve the laminar flow of air off the hood) but here's some more info for ya:

http://members.misty.com/don/uvbulb.html

and here's a great place to buy bulbs at a decent price:

http://www.soslightbulbs.com/shop/customer/pages.php?pageid=12


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Invisibleagar
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Re: Uv light Vs. Hepa filtering [Re: gsmith]
    #3744608 - 02/07/05 11:19 AM (12 years, 9 months ago)

You must be thinking "flowhood".

Instance I refered to was UV light in metal ductwork behind filter, because it killed anything that got past the filter. The ductwork fed into a "clean" room area & it was fully sheilded.


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Offlinegsmith
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Re: Uv light Vs. Hepa filtering [Re: agar]
    #3750041 - 02/08/05 08:33 AM (12 years, 9 months ago)

i was indeed.


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InvisibleDamn_Skippy
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Re: Uv light Vs. Hepa filtering [Re: agar]
    #3752116 - 02/08/05 07:56 PM (12 years, 9 months ago)

Quote:

agar said:
UV light strong enough to STERILZE will F/U your eyes, skin, cause cancer & other BS.

If it is contained, as in well sheilded..... it works great, but you still need filtration. Best is hepa filter run into UV light sheilded in metal ductwork.



exactly, anything under that will just cause genetic mutations


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OfflineNo_Life_G33k
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Re: Uv light Vs. Hepa filtering [Re: Damn_Skippy]
    #3991527 - 03/30/05 07:07 PM (12 years, 7 months ago)

I had been wondering about UV too- notice the blue lights in the supermarket deli's???

I was building a glove box, and I wanted to have positive pressure, so I added a computer fan and a HEPA-- but they make computer fans w/ UV (LED's???) built in- so I thought it might be worthwhile- but wouldn't UV run the risk of killing spores???


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Offlinedebianlinux
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Re: Uv light Vs. Hepa filtering [Re: gsmith]
    #3991599 - 03/30/05 07:35 PM (12 years, 7 months ago)

yes, hyphae is correct but so are you.

I happen to have a rather nice industrial flowhood. this flowhood incorporates a UV bulb in the intake plenum. the working area, where one might sterilise utensils is bathed in typical flourescent lighting. i suppose it would be possible to replace the tubes with the UV variety but additional shielding, switch lock-out, and extraneous lighting would have to be installed. as it is, i just mist the cubic work area including utensils with isopropyl and turn the unit on.


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Amazon Shop: Agar, HEPA Filter, Laminar Flow Hood

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