Hello, The problem you are facing is that when you make CS, you are making CS plus some ionic silver at the same time. The TDS meter measures conductivity primarily of ionic silver. The amount of ionic silver is proportional to the CS in a non linear way.
Best wishes, Bob Fred Walter wrote: > > >From: "Bruce K. Stenulson" <[email protected]> > >>[email protected] wrote: > >> Someone on the list is recommending a PPM device for $30 ... > >I haven't bought one yet, but have also considered it. > > from email from another fellow experimenting with CS, > who has the above meter (a TDS-1): > > :So I tested 3 batches w the TDS1 & sent them off for "atomic adsorption" > :analysis to Kimball Labs in Lehi, UT (only $10 PER SAMPLE --- a steal > :compared to the going rate in the industry: $25-50.) My hope was to be > :able to build a reliable conversion factor table, so that we can then > :depend on DIRECT TDS1 readings in the future. > : > :Well I called up & got the results today: and the relationship is NOT > :linear --- all we can count on is that the true silver content is higher > :than the TDS1 silver content reading --- it varies betw 20% and 50% higher. > :(I'm assuming Kimball's testing is accurate. Don't know if that's a > :reasonable assumption, but I'd rather believe him than my TDS1.) > > Note that this meter can be purchased directly from Hanna Instruments > for around $15.00+S/H, but if you purchase it directly from them, you > probably also want to buy the calibrating solution kit (enough for 25 > calibrations) for $15.00+S/H. Call Diane Guimont, Inside Sales, > 800-426-6287. They also sell a pH meter, model "CHAMP", for $30+S/H, > and calibrating solution for it is about $7+S/H. I recently ordered all > of these from them. (I was originally going to order the TDS-1 from > Gerald D. Perry for $30 (including S/H and the initial calibration) but > I'm in Canada and he doesn't take VISA.) > > >The approach I described using the meter in the circuit while the > >process is running lets you always end the CS generator process at a > >specific PPM level, since (with all other factors being the same) the > >current that will flow through the generator is always a direct function > >of the quantity of ions (colloidal silver particles) in the solution at > >any moment (As long as you start with pure distilled water!). > > What happens if you increase the amount of water? Say I wanted to make > 8 cups at once instead of just 8 ounces? > > fred > > -- > 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]> -- 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]>
