With large electrodes and very low currents you may not see hydrogen bubbles.
The Faraday equation gives the total amount of silver released into the water, and if you have residues building up your final product will be of less ppm than indicated by the equation. The Faraday equation indicates the *maximum possible* ppm but you will have to subtract the losses from that maximum. Dan -----Original Message----- From: Carlos Pérez [mailto:explorer...@hotmail.com] Sent: Friday, July 13, 2007 2:29 PM To: silver-list@eskimo.com Subject: Re: CS>Voltage...Where did my H2 go? Hellow, friends, As you remember, with the help of many of you I have learned how to make a very decent EIS, but I still have questions to ask in order to keep improving. The latest "provisional" setup I am using consists in the following: A cylindrical glass flower pot 20 cm high, 10 cm in diameter, which holds 1350 ml A plastic disk covering the container, with two sets of two holes, distance between holes 25mm, distance between sets 45 mm, drilled to accomodate two 9999 10ga silver wire electrodes, 262mm long each, bent in a long "U", the tips coming out of the holes, one tip in each used to clamp the alligator clips coming out of the circuit (built with the help of list members and with some home made additions), which results in two "U" form electrodes with 25 mm separation between legs, 45 mm distance between electrodes, immersed 232 mm in water. The power source is a 24 V DC output computer transformer. Procedure: I use 250 ml of previous EIS batch, usually averaging 16 ppm according to Faraday equation. Add 1100 ml of bi-distilled, filtered, de-ionised water which has a conductivity of 0.2-0.25 mA. Example of readings every hour from last batch, no stirring at all: 9.6V-0.4mA 8.9V-0.4mA 8.1V-0.4mA 7.3V-0.5mA 6.6V-0.55mA 6.0V-0.6mA At this moment I stoppped a few seconds in order to clean cathode´s mild accumulation of silver oxide w/ paper towel. 5.3V-0.7mA 4.9V-0.7mA 4.4V-0.7mA 4.2V-0.75mA 3.9V-0.75mA Clean cathode again. I prefer to take a longer time in order to maintain the process at a maximum of 0.75mA, since I understand this way I get smaller colloidal particles produced. According to the Faraday Equation, I got 16.5 ppm after 10 hours. I can reach above 20 ppm within the same 0.75 mA if I need it just letting the process go two hours longer. Here are my questions: There is not any hydrogen bubbling produced at the cathode. Where does the hydrogen go? Do I still need stirring in this setup? The EIS produced is cristal clear, no yellow hue even after months, practically invisible Tyndall effect, no residues at bottom of jar, occasionally 3 or 4 tiny white specs floating that I remove at the end. What am I getting in my EIS? What are the approximate proportions of ionic/colloidal silver? If I don´t clean the cathode, dark grey beard-like fuzzies naturally build at the lowest part of it towards the end of process and I get two or three little pools of mirror-looking silver floating on top. Thanks again for your help!! Carlos >From: Ode Coyote <odecoy...@alltel.net> >Reply-To: silver-list@eskimo.com >To: silver-list@eskimo.com >Subject: Re: CS>Voltage >Date: Tue, 10 Jul 2007 09:26:24 -0400 > > > > Voltage is irrelevant. > Any voltage over 1.2 will do. > "Current density", the ratio of current drawn through your changing >conductivity in the water to surface area of the electrode is important >to keep the Nernst Diffusion layer from over loading. > Current draw can be controlled by gradually increasing distance >between electrodes, or by using a constant current circuit that drops >the voltage as the conductivity goes up. > It's all about Ohms law. > A 20K series resistor with a 24 volt power source works ...OK. > >ode _________________________________________________________________ Don't just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/ -- 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: silver-list@eskimo.com Address Off-Topic messages to: silver-off-topic-l...@eskimo.com The Silver List and Off Topic List archives are currently down... List maintainer: Mike Devour <mdev...@eskimo.com>
