Dear Ole Bob, Jason, Tony, Marshall, Trem, Everybody Thanks for all the helpful points, and I'm still something of a novice on the CS aspect of ceramic water purifiers. But I have a comment and question on the need for stirring: my understanding is that sometimes stirring is not needed, since the flask is kept at about 200oF. Wouldn't this bring about a kind of thermal stirring, dispersing the ions?
Also, checking back in the literature, isn't it true that for CS that's generated with DC the only accurate procedure in the lab comes from a spectral analysis? And how does the Hanna PWT do when measuring the very small particle sizes? Much of what I've seen on list concerns the way particles get bigger with additional ppm, but doesn't the frequent polarity reversal keep the particle size down? So in this method of making concentrated CS I could have a huge percentage of small particles, of a size that will not be indicated by the Hanna PWT. To imagine that I'm getting only 2.4 ppm, for this 9:1 solution, with bright orange color, pearly irredecence and strong TE, seems just utterly absurd. Is it true that for DC generated CS the Hanna device would indicate only about 10% of true ppm? So if my 9:1 dilute is indicating 2.4 ppm it's really 24ppm. And my undiluted CS would be more like 240ppm? From what I'm seeing this kind of concentrated CS is a very different animal by comparison to the 10 to 20 ppm CS. I would be highly appreciative if someone could suggest a different kind of regime for testing ppm, ionic, particulate or whatever, CS of this very particular variety. This regime would be especially necessary to small cities, where the lab resources may be a bit limited. As usual you guys are an indespensible lifeline. Reid Ole Bob said: Hi Reid, When I introduced polarity switching about 5 years ago I did a study on swithing times but always with a 50% duty cycle. I started with 12 x 12 sec and advanced to 120 x 120 sec. I found that the 60 x 60 was the best comprise. I did sell about a dozen EZCS2 units with motorized stirring. When I fist present ed the idae of polarity switching there was resistance to it with some saying that I was blowing the oxides or something back into the CS, it has become universally used. "Ole Bob" -- 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: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
