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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