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Shop: Kraken Kratom Red Vein Kratom   Unfolding Nature Unfolding Nature: Being in the Implicate Order

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OfflineMilitoD
Gordo8
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Registered: 12/01/19
Posts: 28
Loc: SI, Nz
Last seen: 3 months, 4 days
Building Flow Hood
    #26872628 - 08/10/20 01:49 AM (3 years, 5 months ago)

Could you guys help me a bit with this?
I'm trying to build a Laminar Flow Hood and I'm struggling to get the right HEPA filter, they're pretty hard to find too (I live in Nz).

I've been emailing a couple of companies.
I told them I need (please correct me if I'm wrong)
-Hepa filter with efficiency of 99.99 % at 0.3 microns.
-Pressure drop/resistance to be about 1.0 wg.
-Airspeed about 100fpm coming out of the filter.

One of them just replied me this:

"For the 1220x610x69 H14 HEPA they are rated to 1200m³/h at 120pa clean pressure drop, you could push them up to 0.5m/sec (100fpm) if you had too but I wouldn’t recommend going any higher.

1x HEPA H14 1220x610x69 - $335.00 + GST

Price exclude packing and freight, this will depend on where you are. Filters Ex Auckland stock.

"

Would that one work just fine?


Cheers for the hand as always.


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OfflineMilitoD
Gordo8
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Registered: 12/01/19
Posts: 28
Loc: SI, Nz
Last seen: 3 months, 4 days
Re: Building Flow Hood [Re: MilitoD]
    #26876419 - 08/12/20 07:24 AM (3 years, 5 months ago)

bump


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InvisibleStipe-n CapMDiscord
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Registered: 08/04/12
Posts: 7,623
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Re: Building Flow Hood [Re: MilitoD]
    #26876550 - 08/12/20 09:25 AM (3 years, 5 months ago)

I wouldn't order a filter that has difficulty operating at the appropriate velocity. You can go as low as .5 inWg.


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OfflineMilitoD
Gordo8
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Registered: 12/01/19
Posts: 28
Loc: SI, Nz
Last seen: 3 months, 4 days
Re: Building Flow Hood [Re: Stipe-n Cap]
    #26876687 - 08/12/20 10:49 AM (3 years, 5 months ago)

Another option came up:

"HEPA filter AstroCel I, type C /Minimum efficiency of 99.99% on 0.3 μm and scan tested/
610 x 610 x 292 size available.
The pressure drop on them is 250pa, which comes out to about 1 inch wg. The side material for ours is aluminium framing."

What do you guys reckon? I think I'll take it.
I'm having a hard time to get a proper blower here in New Zealand though. Info/Suggestions?

Cheers


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InvisibleStipe-n CapMDiscord
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Registered: 08/04/12
Posts: 7,623
Loc: Canada Flag
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Re: Building Flow Hood [Re: MilitoD]
    #26876735 - 08/12/20 11:23 AM (3 years, 5 months ago)

1 inWg @ 100fpm?


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Shop: Kraken Kratom Red Vein Kratom   Unfolding Nature Unfolding Nature: Being in the Implicate Order


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