Best Instrument to Test PPM in Homemade Colloidal Silver

Hello Mama to Many;

I have only bought one ppm indicator in 24 years of silver making. Since I know the concentration after dilution then I don't have to check having done it so many times.

Hi Mama! I personally have been using the Zero Water tester that I got with the jug. It has worked like a charm for a few years now. The department store I bought it in says they get stolen out of the boxes all the time, so check your box of you decide.to buy one. Luv.your contributions to this site, you sweet thing!

For testing colloidal silver the most accurate unit will be the Hanna PWT. Next best is the HM digital EC-3.

M to M,

Sorry, I don't have a recommendation for a TDS meter, because I don't use one. The silver generator I use automatically determines the PPM of the silver I make in the range from 1 to 320 ppm and monitors the release of silver ions from the anode as the batch is running and then automatically shuts off when the desired ppm has been reached. I think the only loss is plateout to the cathode which is almost nothing when making 20 ppm CS and what little if any silver adsorbs to the beaker itself.

I have always read that a TDS (total dissolved solids) meter is fine for determining how close to "000" the distilled water is that you start with, but can not accurately determine ppm of CS because other factors play into the equation such as if you use any type of electrolyte, stabilizer, heat or capping agent among others. If you make your CS using a stirrer or bubbler this also can affect the TDS reading . I think another factor is that CS is not actually a dissolved solid, but rather silver particles in suspension.

What I am more concerned with is low turbidity and high clarity of the final solution......rich yellow color and crystal clear.

Art

Dear Dave, Katzie, Steve and Art,

Thank you all so much for getting back to me with your thoughts about ppm testers for home made colloidal silver! That was all helpful!

~Mama to Many~