DeWALT DWXAF101 Workshop Air filter 0.3um

[Thedog]

Hi everyone,

I am interested in buying a wood workshop air filter unit.
There seems to be many types & brands readily available int he UK.

However, it seems the particle size spec of the filter is normally around 0.5 or 1 um.
After lots of reading about how particles are actually captured, it would seem that the magic number is 0.3um.
Once particles get below 0.3um they behave differently due to their low mass so most units that state 0.3um will also capture lower than this.
Anything higher than 0.3 seems easier to capture (likes large marbles falling falling through a small net - whereas <0.3 does not work like this)

I found that the two stage HEPA offering of the DeWALT DWXAF101 has a spec 0f 0.3um.

But I cannot find any reference to it on the Dewalt UK website and certainly can't find any UK suppliers offering a 230 V version (or a 110V either).

So, where can I buy one from?
Or is what other brand offers a 0.3um Spec?

Thanks

 

[Thedog]

Seems to be available in the US from Amazom.com

https://www.amazon.com/DWXAF101-Filtration-Collectors-Woodworking-Controlled/dp/B0BGBM3QFX/ref=sr_1_2_sspa?crid=1TYOCFRYYAFCM&dib=eyJ2IjoiMSJ9.28sJgIFj6WTMvR9jehUQL1m9jmPwjHu8nGinHCibHVE.qjqPTNtbkt7nA_FF2uoW0HquDptVIAIxDpKt4Ndx-k8&dib_tag=se&keywords=DeWALT+DWXAF101&qid=1740310991&sprefix=dewalt+dwxaf101,aps,132&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1

Its also has an automatic mode with inbuilt air sensor (Don't know how good it is?)

UK imports taxes & shipping are high from buying Amazon US and its 110V I believe.

I wonder why Dewalt don't have a UK version.

Uhmmm?

 

[Sideways]

For air filters, I think standards compliance is a big deal. Vendors wave labels about with gay abandon but if they say something is compliant with an international standard, they should be able to show a test certificate and are putting their necks on the block rather more.

For hepa filters H13 is the number.
It means 99.95% of those 0.3um are caught.
H14 means 99.995% of those 0.3um particles are caught (so 10x better).

But true HEPA filters are pricey, need a fairly powerful fan to push the air through, and tend to be bulky too like for like.
If you are working with hazardous silica dust, etc maybe necessary, but for DIY woodwork, I do wonder if that's overkill and maybe an F14 filter (older standards terminology, I'm not sure what the current euro equivalent is) would be enough. Those are typically considered good enough for welding fumes and car exhaust fumes, so pretty fine, and definitely cheaper.

I looked at the link to the dewalt above. It says H11. That's probably why they don't import it.
H11 is hundred times poorer than H13 so I doubt it qualifies as a "standards compliant" HEPA filter, certainly under the ISO worldwide standard, the American standards aren't much different so it wouldn't quality there either.
https://en.wikipedia.org/wiki/HEPA