The confusion comes from mixing terms and not knowing it.
Both TDS meters and EC meters do the same thing, but a TDS meter uses that
info to calculate PPM for "salt water" as roughly half the conductivity
that both meters actually measure.
"Salt water" is not silver water.
Since the conductivity "number" is about the same as the PPM "number" after
either meter bottoms out over time... in "silver water"....and the
calculated PPM number is about the conductivity number doubled.. in any
water.... then the PPM number doubled is roughly equal to the conductivity
number, which is about the same as PPM silver, a comparison as determined
by an instrument that can actually measure "PPM" [Atomic Absorption
Spectrophotometer ] which NO meter can do.
Clear? [as mud..straight as snake speaking truth from both branches of
its tongue.]
To resolve confusion, ALWAYS speak in terms of conductivity [uS]...not
PPM..when dealing with silver water.
That means that those using a TDS meter [or a COM-100 in PPM/TDS mode] must
de-convert their readings so they'll make sense when talking about "silver"
and say "uS", not PPM.[even though they are about the same number after
de-conversion]
Another term could be "uS/PPM" to indicate that either the de-conversion
to conductivity was made, or, that it was measured directly and didn't need
to be made.
.. a lovers communication, pillow talk in the dark of night between
"EIS/CS" and "uS/PPM"
That someone else I'm fooling around with.... is you wearing a wig, honey.
If you keep changing it, I'll call you Blondie one night and Red the
next..so..what was your real name again?
..hard to to get the eyeballs past the cleavage to the name tag, ya
know...and I don't read Braille bumps well enough to tell anything but that
the paper it's on is about the same size and texture when the message is
always the same two bumps that spell invitation.
[Just because there are two boobs in this bed, doesn't mean that either
of us is one of them. ]
Ode
At 01:20 PM 9/24/2009 -0400, you wrote:
Please excuse me for barging into the middle of this thread, but I'm
reading things here that I find rather confusing. Which meter are you
using to test your TDS? I've been using the silver puppy for 3+
years now and never had a batch test below 11.1 and
normally its over 13.0. Even after sitting untouched for months my
TDS is still in the 11 to 12 range. Im using
the Com-100 meter and had assumed this meant my CS was 11 to 12
ppm. Am I wrong or what is it Im missing
here. Without archives its difficult to trace this back to the
source. Can someone please enlighten this feeble brain? btw my DW
tests at .3 or less prior to brewing.
Thanks
zoe
Dorothy Fitzpatrick wrote:
That is probably normal Melly, you are brewing EIS like most of us i.e.
approximately 80% ionic and 20% colloidal. The concentration probably
depends on how long it was brewing for. Mine normally reads 7 after the
auto Silverpuppy shuts off. It will then go down to about 5 after a
couple of days. This would mean it is around 10ppm. dee
On 24 Sep 2009, at 17:55, Melly Bag wrote:
How do i know if what i brewed is EIS or CS or combination of both or
if it even contains silver? Yesterday, i brewed and my TDS read
7ppm. Today, i measured again by TDS and it is only 4. Is it normal to
go down? When does it stop going down?
Thanks
Melly
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