Comments on: Overview: Types of Air Filters & What to Know https://smartairfilters.com/en/blog/air-filter-types/ Clean air is not a luxury - affordable air purifiers Sat, 08 Jul 2023 08:12:01 +0000 hourly 1 https://wordpress.org/?v=6.6.2 By: Paddy Robertson https://smartairfilters.com/en/blog/air-filter-types/#comment-8307 Fri, 01 Feb 2019 08:05:50 +0000 http://smartairfilters.com/cn/?p=536#comment-8307 In reply to Miika.

I’m glad you brought up the ‘foam’ carbon filters Miika! We haven’t done any rigorous tests on these yet, but it’s on our list of things to test! We did do some preliminary tests when we were looking at what carbon material we should use for our purifiers. When testing it then, we found that it wasn’t as effective as our regular granular carbon (the effectiveness was roughly 65% lower!). Based on that one test, we can make an assumption it’s not as effective, but more testing would need to be done to be sure.

Most carbon material that’s sold have RoHS safety certificates validating that the carbon contains no harmful contents, so I wouldn’t worry about that too much. However the question of whether inhaling any particles ‘shed’ from the filter is probably not an issue. If this were to happen (again, it’s an if) it’s likely the material would get caught in the HEPA filter. Still, activated carbon is carbon after all, which is not as harmful to our bodies as heavy metals and other chemicals (as you say)

]]> By: Miika https://smartairfilters.com/en/blog/air-filter-types/#comment-6349 Sun, 30 Dec 2018 20:39:38 +0000 http://smartairfilters.com/cn/?p=536#comment-6349 Great reading, whole blog, most appreciated thank you! If we go deeper, what do you think about quality of those impregnated carbon filters what are used as pre-filters for actual HEPA? Some ordinary e.g. Electrolux air purifier used in Europe market area use following pre-filter https://www.amazon.co.uk/Electrolux-EF109-Accessories-Purifier-Activated-Carbon-x/dp/B008PORWJ0 How is activated carbon attached to plastic (I think that it is not microglass fiber) filtration material? Can the activated carbon itself shed and cause pollution? Hard to find any kind of quality assurance and/or test document. Can the carbon itself contain some heavy metals and to what extent and so forth. What I found about activated carbon was that excessive amount inhaled might cause lung injuries ( https://www.ncbi.nlm.nih.gov/pubmed/16775697 and there are others). I think those are rare cases and well everything is poison only amount matters https://en.wikipedia.org/wiki/The_dose_makes_the_poison

I suppose that due there is HEPA filter in my Electrolux machine AFTER activated carbon pre-filter this is assurance that nothing nasty should go in to room air, not any levels to make anything to worry about.

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