Greetings, Herx... Fantastic Job! Even though I am certain the calculations are not perfect, I think it is an EXCELLENT tool to assist people getting more involved with the whole process.
I recently added a document written by Bob Lee on Faraday's equation to the Colloidal Silver Database Website. I would love to include your spreadsheet and examples - it would be a great "checking" tool for those trying to work through the equations by hand. http://silverdata.20m.com/howmuchsilverdididrink.html I will also follow up with a request for use to your private email as well! Perhaps I will provide both the excel version and provide a javascript version as well for online calcuations? Jason ----- Original Message ----- From: "herx" <[email protected]> To: <[email protected]> Sent: Friday, November 09, 2001 10:53 AM Subject: CS>Answer how to calculate ppm of CS at home > Hello list, long time listener, first time caller. > > I've read many posts here regarding calculating ppm of CS. I can help > you figure out the ppm of the CS you're brewing at home, or help you > determine how long you need to brew in order to get any desired ppm. > > There are several ways of knowing the PPM of your homemade CS. One way > that doesn't require an expensive PWT meter is to use Faraday's equation > for electrolytic deposition. If you know how much current is flowing > through your electrodes, you can calculate the PPM being produced. If > you're not up on electrochemistry, I've written a spreadsheet that will > calculate it for you. > > The spreadsheet (for MS Excel) and instructions for using it can be > downloaded for free at: > > http://briefcase.yahoo.com/cs_share/ > > In order to use it, you need four things: > > 1. A registered copy of Microsoft Excel (version 4.0 or later). > > 2. Know the amount of current flowing through your electrodes. You'll > need to have a multimeter with a scale that reads current in increments > of one milliamp or less. > > 3. Know the amount of time (in minutes) your current flows. > > 4. Know the volume of distilled water your electrodes are immersed in. > > > If you don't have constant current (I suspect this applies to most home > CS brewers), the calculator will let you take periodic current readings, > and it will calculate the average current for you and give you a running > total of ppm. The calculator lets you chose the intervals you'll read > the current. For gallon jugs, I recommend every 10 minutes. For smaller > containers, 5 minutes or less is probably better. > > One advantage of this method is that it takes into account both the ionic > and particulate Ag being deposited into the DW, so it should be more > accurate than methods like PWT meters, which only measure one but not the > other. > > Faraday's equation calculates the mass of a metal (in this case, silver) > being liberated from the anode, based on the amount of current and the > duration of current flow. Once you know the mass of the silver deposited > into the distilled water, it's a simple matter to calculate the ratio of > the mass of the Ag to the mass of the DW, and convert this ratio into > parts per million (ppm). The spreadsheet I wrote does all this for you. > > I'd appreciate feedback from anyone who tries it. I'd also like to hear > from CS veterans who may not need it themselves but are willing to test > it and compare its results to the compensated results from their PWT > meters, or to more sophisticated laboratory methods. Some folks at the > Yahoo CS club have tested it and found it to be accurate within an > acceptable margin of error. > > Feedback and questions may be sent to: > cs_share (at [spam stinks]) yahoo (I hate spam [dot]) com (that's an > underline character there) > I can't check this email every day, but I promise all questions will > receive a reply eventually. Just give me a few days. > > The eScribe Silver List has been a valuable resource to me since I first > started brewing CS about 6 months ago, and I would like to offer this > calculator for free as my way of saying thank you. > > > PS: Mike, thanks for the important job you do here. By the way (from > another recent thread), the moon doesn't pull at the oceans, it pulls at > the earth as a whole, and the oceans (tides) sort of slosh about as a > side effect. Actually, the earth and moon rotate around a common center > of gravity which is a few hundred miles from the center of the earth. > This common center of gravity orbits the sun. Tidal effects are the > result of the oceans' inertia - it's similar to water sloshing in a glass > as you move the glass. So I don't think that lunar tides have much > effect on a CS vessel measured in milliliters. But I'm willing to be > proven wrong. It's been done before! > > __________________________________________________ -- 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]>
