George Martin wrote: > > =>>It seems to me that I need to find a water lab that can tell me exactly > =>>what I have and then I'll have to calculate a conversion factor to measure > =>>my solution in the future. > =>>If any of you experts out there has better information, or can give me some > =>>direction, I'm anxious to hear from you. I think I had assumed that the > =>>TDS-1 would give me an accurate measurement of the ppm in my CS. > => > > You should have tests run at different concentrations (i.e. 5ppm, 10ppm, > 20ppm) as read on the > TDS-1 to check for linearity, For example, if the TDS-1 read 5ppm and the > lab determined the > sample was 12, the TDS-1 read 10 ppm and the lab read 25 and the final sample > read 20 ppm on > the TDS-1 and 50 ppm from the lab, we would be reasonably certain that the > conversion factor (2 > in this example) would be good for the ranges we are concerned with. > > Regards, > George
It should be noted that the TDS can not identify ionic particles. Bob reported as much with his conversation with the manufactures of the TDS meters. At least that is my memorey of what he said. bjs -- 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]>
