To Ivan & others who use conductivity meters, A conductivity meter is just what it says it is. It will give an unreliable approximation of concentration, but it is being used to be something it is not.
The quality of water changes constantly, and hence its conductivity. So does the colloid, which also has an impact on conductivity. And unless all ionic consequences of contaminants in the water [and from the silver] are removed that will also contribute to the error. We have also noted variation in process as a consequence of lunar phase [which should serve to drive the lunatics among us crazy]. Stephen ----- Original Message ----- From: Ivan Anderson <[email protected]> To: Silver-List <[email protected]> Sent: Thursday, April 13, 2000 12:55 AM Subject: CS>Hanna meter > Well there you go, > (Are you there ole Bob) > > It just shows you the unreliability of using conductivity as a measure > of concentration (ppm) of colloids, unless they are used within strict > parameters. > Although, if Robert uses his PWT in the same manner every time, then > the chances are that he will have good correlation between his reading > and the actual concentration. > > The relationship between silver IONS (Ag+ as distinct from colloid > particles) is > 1.76 at 5ppm and 1.78 at 20ppm, so lets say 1.77. That is the uS > reading times 1.77 is the concentration in mg/L (ppm). 1.77ppm / uS or > 0.57uS / ppm. > In full... 0.57 uS cm^2 / mg. > > So 5ppm will read 2.8uS > 10ppm will read 5.7uS > 15ppm will read 8.5uS > 20ppm will read 11.3uS > > The above is true for a silver colloid that is made with some regard > to current limiting (density) and minimal sludge inclusion, AT THE > TIME THE POWER IS WITHDRAWN FROM THE ELECTRODES. > > Many will find that the conductivity or ppm reading will rise as time > passes, even to a point where the reading is double the actual silver > concentration. > The uS reading of well made CS seems to rise until the ppm equals the > uS reading and remains stable at this point. > > The rate and the amount this occurs can be some indication of the > quality of the colloid, that is, the amount of uncharged particle > inclusion, and the amount and rate of flocculation or particle > aggregation. > > Ivan, > > ----- Original Message ----- > From: "Robert Dohr" <[email protected]> > To: <[email protected]> > Sent: Thursday, 13 April 2000 10:35 > Subject: Re: CS> Hanna Meter > > > > Greetings Seekers; > > Regarding Hanna Meters TDS & PWT. I have the PWT #98308. I know Ken > (Coyote) > > has the TDS1. We have been comparing notes on batches made using the > same CZen > > generators. As for me I spoke to the techs at Hanna. They said that > with the > > PWT which measure conductance in us/cm, to convert to PPM I should > divide by > > two. I made a sample batch of CS which measured 25.5 us/cm and sent > it to the > > lab at CSPro systems to have it tested by PhotoSpectrometry. The > results came > > back at 15 PPM. That would be 59% of the measured reading. This is > how I now > > measure all my batches. Ken can tell you what fudge factor he uses > for his > > TDS1. How about it Coyote? > > NAMASTE' > > Beldohr > > > > > > > > -- > 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] > Silver-list archive: http://escribe.com/health/thesilverlist/index.html > List maintainer: Mike Devour <[email protected]> >
