Calibrate near the concentration you hope to measure, there is a change in the magnitude of conductance as concentration varies.
I agree with your final conclusion FWIW. Ivan. ----- Original Message ----- From: "Michael Leavitt" <[email protected]> To: <[email protected]> Sent: Sunday, 16 April 2000 13:46 Subject: CS>HANNA PWT > One of my friends just purchased a Hanna PWT, his must be a newer model > than mine it is a little larger. We checked out 3 different batch's of > Cs with both meters, and they read a little differently, but within > reasonable limits. I was wondering if when calibrating the PWT it would > be best to use 2 solutions at different strengths to check the span of > the meter or is one calibrated batch sufficient. For me if it is on at > 10ppm it would most likely be close at the rest of the range I make Cs > in. > > One of the batch's we took a reading on used to be 22us, it is now > reading 44us, I think I made it about 2 months ago. This is the first > time I have seen that much of an increase in the us reading, but > normally we use it up pretty fast. What is really changing to make the > us go up? Size due to particles batching up? > > Thanks > Mike -- 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] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
