Reddit mentions of Filtrex (FX10VOC) 9.75"x2.75" Ecocarb GreenBlock 5 Micron VOC Carbon Filter

Thank you for taking the time to respond.

Bio based binding is still something other than coconut shell carbon. My point was that it wasn't 100% coconut shell.

Carbon might be the "most effective"- I'm not arguing for or against that. My comment about a "limited" amount of VOCs was more about VOCs in comparison to chlorine and other things: most carbon blocks' lifespan recommendation specifically for VOCs is drastically fewer gallons and lower flow rate than the standard suggested service life.

For example:
https://www.amazon.com/dp/B015DOAHGE
" Capacity: 10,000 gallons @ 1 gpm VOC reduction capacity: 500 gallons @ 0.5 gpm "

As far what carbon they use, is it tested in granular form? Powdered form? Carbon block form? Are they using it in the form it was in when it was tested? The reason this is important is that if they are buying certified carbon and then further processing it, the certification goes out the window- it may no longer perform the same way (and likely doesn't).

Also, NSF-53 doesn't indicate specifically what is being tested- it's a testing standard for the reduction capacity to test against a manufacturer's anticipated reduction, so yeah, it probably removes lead (since they claim it and claim NSF-53 testing for it), but how much? (I didn't see this specified) This is important because if they claim "1 PPB", then NSF-53 is only concerned about making sure it actually does at least "2 PPB", and that means it's just a marketing gimmick.

The data matters here, is all I'm saying. I WANT to believe, but I'm a skeptic at heart.