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: silver-list-requ...@eskimo.com -or- silver-digest-requ...@eskimo.com with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: silver-list@eskimo.com Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <mdev...@id.net>
