How hot the water? (was) RE: Re[2]: [at-l] First aid 101

[jbryankramer at msn.com (J Bryan Kramer)]

>
> >"... "Most" toxic chemicals apparently are larger than those
> filters' smallest
> >holes and larger than water molecules."
>
> My apologies for continuing a debate on a subject that I truly am
> not an expert
> on. But I suspect that molecule size has little to do with filter
> removal of
> chemical contamination of water sources. My memory suggests that
> only those
> filters with charcoal elements, remove dissolved  chemicals.
>
 That is generally correct albeit there are other materials besides charcoal
which will do filtration based on molecular size (Molecular Sieves are one
example). You won't find these materials in your PUR filter tho.

Bryan