Dear Mike: I had my nano colloidal silver solution tested by Frank Key. I watched the testing process while discussing other things so my recollections may be vague. I am sure Frank would be available to give more details.
The process is a high frequency induction heater creates a plasma that vaporizes the liquid sample. Then a movable grating is used as a scanning frequency selective meter. This plots the amplitude vs. frequency of the sample. This produces a peak amplitude at the silver frequency. There will be other peaks if the sample is not pure. There are several automatic calibrations that are part of the normal operation of the meter. Distilled water, a calibrated known concentration, then the solution under test. This is repeated three times and an average is taken as the final answer. What this measures is the total silver concentration and does not differentiate between ionic or particles. In order to determine the ion particle ratio, the sample is put in a super centrifuge which precipitates all the particles leaving the ionic part. This then measured with the spectrometer and the difference calculated. Jim Meissner www.MeissnerResearch.com -----Original Message----- From: M. G. Devour [mailto:[email protected]] Sent: Monday, July 28, 2008 10:59 AM To: [email protected] Subject: Re: CS>spectrophotometer readings I assume Peter's talking about an instrument that measures absorption/transmission through the liquid, Ken! Atomic absorption spectrophotometry is another animal alltogether. Peter, did you run a control sample of plain distilled water with which to compare? A quick visual scan of your data suggests a basically smooth, gradual rise in transmissivity with increasing wavelength. The data points are so sparse there's no chance to discern any fine structure. I think there was some more informative work done using a scanning UV/visible/IR spectrophotometer, but I don't remember by whom. With a continuously variable wavelength light source, one could expect to see an actual resonant peak (or trough) where the particle size distribution would interact with the wavelength of the light. A sufficiently small particle size would interact in the ultraviolet, I believe. I don't know what, if anything, you could see of the ionic component of your preparation. I hope others remember more about this than I do and can dredge up some references and/or archived messages on the topic. Be well, Mike D. > Since a [AA} spectrophotometer essentially vaporizes a sample into a > plasma, why would particle size be any part of that? > > ode > > > > At 04:03 PM 7/28/2008 +1000, you wrote: > > >Dear csers, > > > >I recently had the opportunity to play with a spectrophotometer.Using > >the instruction book procedures gave the following readings: > > > >I took readings at wavelengths for > >blue(470nm),green(555nm),yellow(585nm),orange(610nm) and red(650nm).The > > results indicated a figure for Absorption(A) and Transmission(T) %. > > > >Blue;A=0.143 T=71.8 > > > >,Green;A=0.136 T=73.2 > > > > Yellow;A=0.118 T=75.9 > > > > Orange;A=0.115 T=76.8 > > > > Red;A=0.093 T=80.7 > > > >My question for those familiar with this apparatus is; > > > >What particle size could be ascertained from these results? > > > >My cs production method uses 27v and halts at 8mA using spiral shaped > >electrodes spaced 25mm apart.Results are a clear solution (no colour) > >but a slight tyndall effect observable via high power(1w) leds > > > >Thank you for taking time to reply. > > > >pete > > > > > > > > > > > > > >********************************************************************** > >This message is intended for the addressee named and may contain > >privileged information or confidential information or both. If you are > >not the intended recipient please delete it and notify the sender. > >********************************************************************** > > > >No virus found in this incoming message. > >Checked by AVG - http://www.avg.com > >Version: 8.0.138 / Virus Database: 270.5.6/1576 - Release Date: > >7/27/2008 4:16 PM > > > -- > The Silver List is a moderated forum for discussing Colloidal Silver. > > Instructions for unsubscribing are posted at: http://silverlist.org > > To post, address your message to: [email protected] > > Address Off-Topic messages to: [email protected] > > The Silver List and Off Topic List archives are currently down... > > List maintainer: Mike Devour <[email protected]> > > [Mike Devour, Citizen, Patriot, Libertarian] [[email protected] ] [Speaking only for myself... ]
