What ever happened to the very worthwile notion of standardizing on microsiemens, and discouraging tds readings?
If this list is about trying to further cs development and use, does it not make sense to use real measurement (microsiemens) and discourage numbers from tds meters, with are, at best, fickle? Rather than every newbie getting a tds, only to realize the readings mean virtually nothing, why don't we make it a standard and encourage everyone to get a meter which reads in microsiemens? At least then, when someone has a question, there is a "real" reading of conductivity for others to use for information. Regards, Jim PS FOR NEWBIES: The reason TDS meter readings are not much help is because nobody knows how everyone else's is calibrated. If everyone is reading the same batch, yours might read 20, mine might read 45, the next guy's might read 6. The number has virtually no meaning on list discussions. (A person might use a tds as a "consistency" measurement which may help you at home, but differences in calibration make it useless as a ppm meter on list discussions.) ALSO: If you have 10 batches of tested and confirmed 30 ppm cs, you may read one at 5 ppm, one at 120 ppm, one at 40 ppm, etc. This is due to the particle sizes being different, which the average person has no way of accurately measuring at home. So the measurement in this case is not even as good as a guess. While the particle size consideration does not go away with using microsiemens, the calibration part does, so fully half of the confusion is instantly eliminated. (Means we are already that much closer to being able to help out with questions.) -- 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]>
