May I suggest that you purchase an EC meter? They are still less than $20 from eBay. If you're lucky, you'll get one that will have reasonably accurate absolute measurements at 50 PPM, plus or -10%. Discounting the absolute measurements, it will give you an indication of what's happening from one batch to the next. As far as the particle size is concerned, color or the lack of is the key. That can be subjective and is best observed with a white surround. The TDS meter is calibrated for sodium atoms. The meters came about as something the Chinese can sell to people with saltwater aquariums. For quite a while, that was all that was available. We found that if we multiply the TDS reading by two, we can have a pretty close reading for silver ions. When the manufacturers caught on to what we were using them for, they made them so that they also had a button to read electrical conductivity in microsiemens. All they're doing is multiplying the TDS reading by two. A lot of sellers of colloidal silver generators were sorry to see these become available. They were able to claim any PPM figure they wanted and tell people that to measure PPM, they would have to send their CS to a lab. Oh yes, and the labs did not know what they were doing, of course. How's the color going? https://theartofmakingcolloidalsilver.com/measure-it/
-----Original Message----- From: PT Ferrance <[email protected]> Sent: Sunday, November 1, 2020 10:50 AM To: Silverlist Post <[email protected]> Subject: CS>TDS meter My first TDS meter just arrived. It talks about calibration but with no directions as how to do this. Since it is showing 862ppm and it has not been dipped into anything I am anticipating that this needs to be done. Would someone point me in the right direction? I've searched but have not found good directions. Thanks. PT -- The Silver List is a moderated forum for discussing Colloidal Silver. Rules and Instructions: http://www.silverlist.org Unsubscribe: <mailto:[email protected]?subject=subscribe> Archives: http://www.mail-archive.com/[email protected]/maillist.html Off-Topic discussions: <mailto:[email protected]> List Owner: Mike Devour <mailto:[email protected]>
