Re: CS>H202, CS and cloudiness
From: sol
Date: Sun, 7 Nov 2004 10:32:36
> I wonder if the problem might possibly be Chloramine? I have read
> that it is becoming a more and more commonly used water treatment
> instead of chlorine. Apparently, if memory serves, it does not
> distill out. I remember reading something to the effect that a lab
> somewhere that had it's own industrial distillers to make DW for
> chemistry uses now has to buy their DW from an area of the country
> where chloramine is not used. (After their local water treatment
> plant started adding chloramine instead of chlorine).
> Or I could be mis-remembering it all, but anyone who has time and
> is having trouble might want to do some googling on the subject.
> sol
Hi Paula,
Your memory is excellent. I just googled Chloramine (NH2Cl) and it
is a nightmare for dw makers. Many municipalities are switching to
it since it is more robust and lasts longer than plain chlorine.
Boiling doesn't affect it, and it is not removed by distillation.
The following quote is from General Electric:
"METHODS OF TREATMENT"
"Distillation or evaporation does not effectively remove
chloramines. During distillation the chloramines would be
volatilized and carried over to the product water (distillate)."
"This is especially important to keep in mind in the
pharmaceutical, power and laboratory markets due to their heavy
use of distillation technology (boilers in the power industry
produce steam via evaporation). The effects of reactive
chlorinated materials on their products are of special concern."
http://www.gewater.com/library/tp/813_Chloramines_.jsp
This could be the source of many strange problems with dw. Thank
you, sol. That was an excellent piece of information.
P.S. What kind of distiller do you use? I am very impressed with
your uS readings and would like to investigate getting one. Is hard
water a problem? The water here is the hardest I have ever seen, and
I have to soak my coffeepot in fresh vinegar every night to remove
the buildup.
Best Wishes,
Mike Monett
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