RE: pH of distilled water

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A low pH (like around 5) is actually indicative of ultra pure water. When
water has nothing else in it, it tends to absorb more CO2 from the air,
forming carbonic acid and lowering the pH.

Bev Miller

 -----Original Message-----
Sent: Tuesday, November 17, 1998 4:44 PM
Subject: pH of distilled water

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 Even though I'm from the "Hills of Tennessee" the workings of
"stills" continue to elude me.  Checked the pH of  our building's
water as it came out of the tank - it was 5.1 and the regular tap water
going into the distiller was 6.3.  Last spring I cleaned the distiller's
500gal Nalgene holding tank with a procedure that used Chlorox, lots of
rinsing, hydrogen peroxide, lots more rinsing.  This cleaning procedure
came straight from Nalgene headquarters and took about two weeks to
complete.  In the meantime, the 20+yr old distiller was left sitting idle.
I know most appliances do not appreciate being left idle for great lenghts
of time.  Any thoughts on what could be happening to cause such a low pH?

Linda Jenkins, HT
Clemson University
Department of Bioengineering
Clemson, SC

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