Hi folks, The difference in uS reading to ppm that various folks have noted is why I did not mention a correlation factor, but advised that one should have their product tested to provide a relationship for their particular output.
The discrepancies in conductivity vs. concentration reflect the condition of the colloid, it would seem (particle size, charge, etc.). The colloid as produced by my little generators show a 1 : 1 relationship uS : ppm, which agrees with Trems results. Ivan. ----- Original Message ----- From: "Alvin Rose" <ar...@nf.sympatico.ca> To: <silver-list@eskimo.com> Sent: Sunday, 4 June 2000 09:40 Subject: Re: CS>PPM > Hi Trem > Please translate my readings...what do you suggest that > my ppm would be 28.5 on my pwt meter 2 ppm to start. > It gets a little confusing for me. > Arose > > Trem wrote: > > > Hi James, > > > > Sorry to disagree. I had a few samples analyzed by the atomic absorption > > method and the readings correlate almost directly with PWT readings. If > > the samples were digested first in aqua regia, then the readings taken with > > the PWT were about 45% lower. That would correlate with readings done on > > a spectrophot.ometer. > > > > I prefer to believe the independent lab results over the Hanna > > recommendation. In any case the PWT reads almost right on or 45% > > high. It's still quite repeatable. So just choose your belief system: > > atomic absorption or spectrophotometer. > > > > I also subtract the uS reading of starting water before the calculation. > > > > Trem > > www.silvergen.com > > > > At 09:28 AM 6/3/00 -0700, you wrote: > > >Somebody said... > > >I just made a batch of Colloidal Silver..I measured the distilled water with > > >a Hanna PWT meter at a reading of 2...I let it brew for 55 minutes..cleaning > > >the silver every 15 minutes or so. my electrodes are 1.5 inches apart in 8 > > >oz jar..The PWT meter now reads 28.5 what PPM do I have? > > > > > >And I say... > > >Well, I'm not Ivan, however, I do have an answer to your query. With the > > >Hanna PWT, you need to divide the number of ppm's that are showing by 2 in > > >order to get a true and accurate portrayal. With your example, you started > > >with 2ppm and ended with 28.5 so first we subtract 2 from 28.5 leaving us > > >with 26.5 and then we divide 26.5 by 2 leaving us with a sol of 13.25ppm (or > > >thereabouts). > > > > > >This is the information that I got direct from my Hanna rep. so I'm pretty > > >sure it's correct. > > > > > >Yours in health, > > >James Allison -- 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...@eskimo.com>
