The unit measures between 0 and 1 ppm. I have to dilute it to get it in
that range. Specifications give an accuracy of 10%, so 60% to 90% error
is way out of line.
Marshall
On 7/8/2020 8:36 AM, Ode Coyote wrote:
Titration is not NEARLY accurate enough to measure 15 PPM
Even an AA Spectrophotometer has great difficulty at low
concentrations and 3 runs of the same sample averaged is the procedure
ode
On Tue, Jul 7, 2020 at 7:54 PM Marshall <[email protected]
<mailto:[email protected]>> wrote:
I am helping my son in law with his colloidal silver production.
But I
am running into something I don't understand. He has been using a
hanna
pure water meter to measure the ionic ppm. He has been applying a
1.1
correction factor, that is brewing for a 14 uS, to get 15 ppm.
He just ordered and received a hanna silver ion colorimeter and we
have
been testing with it. When we dissolve the CS silver in nitric acid,
the readings are way off, near zero. I am going to contact Hanna on
that, I am assuming that either the nitrate ion, or the pH is
messing it up.
But testing some week old CS, I am getting about 6 ppm on the
colorimeter, but 12 uS (or about 13 ppm) on the conductivity
meter. I
don't know which one is wrong. Anyone have experience with the
colorimeter?
Thanks,
Marshall
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