Brian & List, I understood that the calibration solution supplied by Hanna is possibly a salt solution at 800PPM; when we're generally working in the 10PPM to 30PPM range, it would seem more appropriate to have a calibration solution of 20PPM. Possible easy contamination is the problem with trying to work with a low PPM solution, however... thorough cleaning /rinsing with pure distilled water is critical...
Just My Thoughts. Be Well! Bruce http://web.idirect.com/~showcase/althealth/csilver.htm ++++++++++++ Brian McInturff wrote: > So, do y'all get the calibrating solution along with the meter? The > saleperson asked if I wanted some ($7/200ml) and I got it. I assume it is a > solution or colloid of known concentration which can be used to adjust the > meter. > > I asked someone about using the meter to measure the PPM of CS and he said the > thing to do was measure the solution with the meter and then send the CS off > to be assayed. That way one could get a feel for the error of the instrument: > For example, say you meaure 30ppm on your CS, send it off to be checked and it > comes back 33ppm. Then you could assume that your meter reads 10% too low. I > don't know if he knew about the calibrating solution, which seems a much > better (and cheaper) method. > > They said they also sell the calibrating solution in a package of small > one-use packets so they can be taken in the field, but these were about twice > as much in price. -- 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]>
