-- On Mon, 13 Sep 1999 01:04:18 Ivan Anderson wrote: >Hi Douglas, > ><grin> better let me take that unit off your hands, before you do >something you regret later. > >BTW a TDS meter is nothing more than a conductivity meter with a >circuit that converts the readout to ppm of some predetermined >compound or group of compounds, the so called TDS factor. This >needs to be further converted to supply a measure of silver ions. > >The TDS meter or conductivity meter will measure any ion or >particle that is not electrically neutral. It will measure >colloids composed of single ions or multi-ion particles. It will >not measure colloids of non ionic or metallic particles. > >So if you are trying to measure a colloid of metallic silver >particles then it will not work. Most of us, however, are trying >to generate ionic silver colloid and in this, if properly >configured, the TDS meter should be fine, I think... > >Regards - Ivan >
Just thought I would throw in how I have used the TDS-1. I bought a box oftheir calibration solution also. I made several different batches of cs and monitored the procedures carefully. Sent the stuff to "ole Bob" to get tested. Bob sent back the results and I settled on one procedure to make the cs. Every batch I have made since then has been consistent. I calibrate the TDS-1 each time and the before and after readings are very close and consistent. I will use up the calibration solution and probably put the TDS-1 away if it stays this consistent! Works for me! Earle Get your FREE Email at http://mailcity.lycos.com Get your PERSONALIZED START PAGE at http://my.lycos.com -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] List maintainer: Mike Devour <[email protected]>
