Brian Whatcott wrote in
:

On Thu, 05 Jun 2008 07:22:51 -0500, Geoff Schultz
wrote:


Activated charcoal filters remove chemicals, including chlorine, by
adsorbing them onto sites on the surface of the charcoal.
///
For removing chlorine from town water such that the filtered water can
then be used to flush RO membranes, the story is more complicated.

Other than testing the level of free chlorine in the filtered water
(pool stores sell test kits for chlorine), I know of no way of testing
the effectiveness of an AC filter at removing chlorine.
///
Bil

/// it
seems to me that a total dissolved solids - TDS meter which measures
water conductivity, would provide a fair indication. They can be
bought under $30.

Brian W

How would a TDS meter tell you if the water had chlorine or not?
///

-- Geoff
www.GeoffSchultz.org

No doubt, you would need to engage brain to draw useful conclusions
but I expect a value for total ionic salts would serve as a useful
proxy for the Cl ion concentration.

Brian W

Brian,

Please explain further. I have a tank of RO water to which city water with
an unknown TDS has been added. How do I tell from the TDS reading how much
Cl (if any, as it may have evaporated) is present?

-- Geoff
www.GeoffSchultz.org