Elixa.com has a device that is supposed to make cs ointment. I think it's elixa.com.
Ivan Anderson wrote: > > ----- Original Message ----- > From: Hutt William J (Bill) DLPC <hut...@ncsc.navy.mil> > > > I've read many e-mails on this forum about achieved ppm, but > little on > > how the parties accomplished and confirmed their results. It would be > nice > > to create a data base of methods in order to create a standard. > > This is supposedly under way, at least I have made an initial > contribution, with more to follow as I find the time. > > > I have seen a couple of e-mails which addressed using a volt-ohm-meter > > to read ppm. > > > Example: 4usec/cm = 1/250kohms; this measurement appears to be > achieved > > by placing the VOM probes in the CS solution at a spacing of 1cm. > > > > Example2: 1ppm = 1.6usec/cm (+/- 20%); If both examples are correct > then > > 5ppm would be equal to 5ppm X 1.6usec/cm = 8usec/cm > > 8usec/cm = 1/R = 125kohms resistance between the VOM probes which are > > spaced 1cm apart in the CS solution. > > If only it were that simple... > Specific conductance is defined as consisting of a cell (portion of > solution) 1 cubic centimetre in dimension bounded on two opposing sides > by electrodes 1 cm square. So you can see that simply placing VOM probes > into the solution will not correlate (unless you know the cell constant > that these probes would develop). Also, conductivity measurement is > generally performed using an AC potential field of some 10K Hz or so to > avoid elctrolytic action and electrode polarisation. > In other words, one is better off using a cheap conductivity meter. > > Concerning the examples you quote: > 1. 4uS = 1/250K ohms by definition. 1S = 1/1ohm > 2. The equivalent weight of silver is 1.08 therefore the ppm as silver > ions (unless I am mistaken) is the conductivity measurement x 1.08, > not 1.6 as someone reported. I questioned that figure when it was posted > but did not recieve a reply (may call into question the accuracy of some > commercial CS machines that have been sold). > > > If we can gather data from known ppm solutions using the above method > ,a > > rough standard could be established and everyone would know about what > > strength of CS solution they have produced. > > > > Resistance measurements of 5ppm, 10ppm, 20ppm, and 30ppm should give > a > > well rounded data base. > > As explained, unless everybody uses the same conductivity (resistance) > parameters the results will not transfer from generator to generator. > Also there is a question about how reliable these results will be with > regard to the particle size of the colloid, although I have had good > correlation in my results between conductivity readings and ppm in my > clear and light yellow sols, more work needs to be done with darker > coloured CS products. > > For what it is worth the specific resistance for the concentrations you > mention are: > 5ppm - 215K ohms > 10ppm -107.5K ohms > 20ppm - 53.7K ohms > 30ppm - 35.8K ohms > > > I realize that their are many other factors to consider when trying to > > measure ppm. The purpose of this e-mail is to try and establish a > standard > > by which everyone can use without purchasing some expensive high tech > > device. > > > > If a simple standard has already been established, what is it? > > > > I would like to know if anyone has a recipe for making colloidal > silver > > salve. > > > > Thank you, > > > > BillH > > Regards - Ivan. > > -- > 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 > > List maintainer: Mike Devour <mdev...@id.net>
