Keep in mind that nothing will tell you the true ppm of your 'brew' besides having it checked by a lab or one of the folks here who does such analysis.
Conductivity or resistance based measurements tend to report only the effects of silver ions and lose track of some or all of the particles. Most of the careful analyses require some wet chemistry to make sure you're counting everything. > I plan to order a TDS meter soon though. Suggestion: If you're going to buy any meter from Hanna Instruments, purchase their PWT (Pure Water Tester). It reports conductivity in microSiemens, which is a bit more "honest" than assuming some vague correction factor and calling it "ppm," and just assume that you're measuring only the ionic component. More importantly, the PWT has a full-scale range of about 200 microSiemens, and you'll be reading values well within its accurate measuring range for your CS. The TDS-1, on the other hand, is typically reading a few ppm out of a full scale range of two *thousand*... Sorta like trying to measure microns with a meter stick. I have the TDS-1 and find that it's a stable device that actually does better than you'd expect it to, but if I had to do it over I'd buy the PWT instead. Be well, Mike D. [Mike Devour, Citizen, Patriot, Libertarian] [mdev...@eskimo.com ] [Speaking only for myself... ] -- The silver-list is a moderated forum for discussion of colloidal silver. Instructions for unsubscribing may be found at: http://silverlist.org 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...@eskimo.com>
