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Re: RO/Ion Exchange
Peter writes:
> Pet warehouse recommended to use a KATI and ANI ion exchange unit, which
> costs almost the same and RO/DI, does not waste water, and can be
> recharged. I'm told it produces even purer water than RO/DI. Does
> anyone have any experience with this method, and can offer advice as to
> which is preferable?
The KATI and ANI unit is a 2-stage variation on DI. The KATI exchanges
cations of calcium, magnesium, etc. for something else, possibly either Na or
K. By the trade name I would assume Potassium (chem. symbol K). The ANI unit
then pulls out anions, like chloride and carbonate. I suspect if forces the
positive ions to precipitate, but I'm not an expert. Is it better than RO?
That's a coin toss. It is certainly better than some DI units on the market,
but others may be better.
Bob Dixon