Use the conductivity setting and read the number 'as is' ..after it has
stopped dropping over time.
** COM-100 Meters will be set to use As ISin CS before shipping.
All hand held PWT/TDS/PPM meters work the same way. They actually measure
conductivity not PPM. They are simply not the same thing.
TDS (PPM) meters such as the TDS3 also measure conductivity but then
convert that measurement to an estimated PPM using water industry standard
tables for dissolved salts. [NaCl in this case] (also known as Total
Dissolved Solids or TDS)
Since Ionic/Colloidal Silver is not a mineral salt, it behaves differently
and requires a different technique for reading the TDS meter.
The reading can generally be taken as iswhen checking pure distilled water
or when checking any other water source such as tap or well water. (ie 200
on the meter = 200 PPM)
However, when checking Colloidal Silver made with pure distilled water the
reading should be doubled. [If it reads 10, its actually 20 PPM of
colloidal silver]
Due to range and resolution limitations, when measuring colloidal silver
with this meter you should also allow for an error factor of at least +/-
10% . So for example 10 on the TDS meter could be as high as 22 PPM or as
low as 18 PPM of colloidal (when doubled).
Meters such as the Hanna PWT, the HM Digital EC3 and COM-100 read out
directly in Microsiemens of Conductivity [uS].
The COM100 also reads out in 3 different scenarios for PPM depending on the
suspected dominant mineral salt content.
Colloidal Silver water is NOT salt water.
All correlations were made with Spectrophotometer testing.
To get a good idea of what the PPM is in CS, measure the conductivity in uS
the day AFTERthe batch is done and use 1uS = 1 PPM.
This is not accurate beyond around 25 PPM in silver water and a batch may
never register more than 30 uS the day after its done even though it may
really be 50+ PPM
This method has been checked against samples tested by an Atomic Absorption
Spectrophotometer at a range average of 12 PPM at 85% readable ionic.
At 09:24 AM 6/13/2013 -0400, you wrote:
Hi - New member Dave N (hello out there). Just recently began brewing my
own CS with a Silver Puppy generator. Started using bottled CS (Food for
Health International's Activz Silver) after researching and pondering for
about 2 years. I have ordered and will be using a nebulizer to control my
slight asthma condition. Seeing that there are so many uses for CS for the
home and personal sanitary purposes, I decided to start making my own. I
have a question about which setting to set the COM-100 meter at. The
directions state either the 442 or the NaCL setting. Since there is no
salt either in the distilled water or the CS that I am brewing (from my
best guesses), I am using the "442" setting but I just want to get more
info from seasoned users. Thanks for any advice you can send my way.
Regards, Dave N.
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