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InvisibleRobert Bobsky
The Perfect Stranger
I'm a teapot User Gallery

Registered: 08/04/18
Posts: 54
Is this HEPA Filter ok for a Flow Hood?
    #26588782 - 04/09/20 12:35 PM (3 years, 9 months ago)
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HI all,

In Europe, where I live, it is not very easy to find an online retailer for HEPA filters.
This is the only one I found that would she direct without having to write emails and wait for a representative to reply.

Anyway, I found this filter, it comes in H13 (> 99.95%) efficiency rating and in the size of roughly 600mm x 600mm (24"x24")

I'm puzzled by its surface appearance: all the filters I see have some sort of grill in front and they are smooth, this one has all these big slots and I'm worried the airflow might be uneven in the front with small areas with reduced pressure.. But maybe I'm just pondering too much.

The other question I have is this: what is the Static Pressure value of this filter? Or any other data that could be used by me to match a suitable blower?

I'm attaching the .pdf that the seller supplies that has all the tech data, I have circled in red (on page 2) the model that I'm interested in buying.

I'm copy/pasting the data here as well:

Nominal size (inch) :24x24x12
Actual size (mm): 592 x 592 x 292

Initial Resistance :
at high airflow (m3/h) / (Pa) = 2500 / 260
at rated airflow (m3/h) / (Pa) = 2000 / 200
Final Resistance (typical) (Pa) = 600

Media area (m2) = 22,0
Filter Class EN1822 = H13

Thank you very much

Bob.


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BoB Bobsky


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Invisiblenatedawgnow
Rocky mountain hood rat
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Registered: 02/09/15
Posts: 8,939
Loc: ation
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Re: Is this HEPA Filter ok for a Flow Hood? [Re: Robert Bobsky]
    #26588840 - 04/09/20 01:11 PM (3 years, 9 months ago)

I would find a different one. 99.95% efficiency is sub standard. You need 99.99+
I'm pretty sure.


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InvisibleRobert Bobsky
The Perfect Stranger
I'm a teapot User Gallery

Registered: 08/04/18
Posts: 54
Re: Is this HEPA Filter ok for a Flow Hood? [Re: natedawgnow]
    #26588908 - 04/09/20 01:47 PM (3 years, 9 months ago)

Quote:

natedawgnow said:
I would find a different one. 99.95% efficiency is sub standard. You need 99.99+
I'm pretty sure.




According to this thread it seems ok... https://www.shroomery.org/forums/showflat.php/Number/21143087?fbclid=IwAR3gOZHqvp_QjKnyJdSJq_yjf9i3LHtBbvZqjkcFIUJByNJSp0WsTiIiSps


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BoB Bobsky


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InvisibleKimble
Idiot
 User Gallery
Registered: 03/08/18
Posts: 508
Re: Is this HEPA Filter ok for a Flow Hood? [Re: Robert Bobsky]
    #26588986 - 04/09/20 02:18 PM (3 years, 9 months ago)



It's been said elsewhere on the forum that H14 grade is recommended. Though i don't know why exactly.

In Europe there are some filters called ultima mp which is minipleat/micropleat. Edmunter and Smoothcat both used these filters successfully.


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