> Reinhard Stanjek wrote: > > > > The solution turns a yellowish color after about 20 > > minutes. However, what concerns me is that the solution also appears to be > > cloudy, milky, and not clear. Is this perhaps a problem or is it this all > > right?
Bruce answered: > The 'cloudyness' is commonly due to the redispersal of the silver > 'sludge' which plates out on the negatively charged electrode; > happens later in the CS generating process when the current exceeds > a certain level, which is relative to your electrode geometry... Careful here, Bruce! Hello Reinhard! If the "milkiness" you see is indeed like what you'd get if you put a little bit of milk in a glass of water, but otherwise you can see through it, then you're seeing light scattered from the colloid. It's common to test for the "Tyndall" effect, in which you shine a small flashlight or a laser pointer through the CS. You *should* see the beam, sort of like seeing the rays of the sun coming through the clouds due to scattering from dust and water vapor in the sky. If you hold the glass against a darker background and shine light on it from over your shoulder it will tend to look milky, as you describe. If the cloudiness is of the murky or muddy type, then it's likely caused by the "sludge" from the cathode getting mixed in with the colloid, as Bruce suggests. The solution to that is to clean the electrodes more often during the process and perhaps not to try to make your CS so concentrated. Be well, Mike D. [Mike Devour, Citizen, Patriot, Libertarian] [[email protected] ] [Speaking only for myself... ] -- 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]>
