>From http://www.elixa.com/silver/
The CS-300D produces solutions equal to or better than the finest available on the market! We have improved the design without increasing the cost to make premium, ultrafine yellow solutions, with particle size in the range considered optimal (0.005 - 0.015 microns in diameter), and outperform any system on the market, guaranteed. >From http://www.all-natural.com/cosilver.html For more detailed information on the CS-300 Unit and how to make yellow Colloidal Silver, the very best available today, CLICK HERE. >From http://www.angelcities.com/members/pathways/cs/making.htm Color will usually deepen after sitting for a number of hours. A yellow colored colloidal silver can also be made with your generator by using distilled water without any saline solution. For best results, use no more than eight ounces of hot water in a tall narrow glass to put as much silver in the water as possible. Process time will be around 45 minutes because of the reduced conductivity of the water. Keep an eye on your solution. If you forget about it and go to the movies you will end up with a highly concentrated brown sludge. I do not recommend ingesting high concentrations undiluted. If you do make a brown sludge you can put a small amount in a glass of water and stir. It should turn the water yellow, or, in higher concentrations, amber. >From http://www.bioelectric.ws/eng/silver-instr.html After two hours when the particles are evenly dispersed in the water the color should be light yellow or golden yellow. Other colors indicate the particle size is slightly larger than the ideal size which may be due to using a low quality distilled water. If there is no color then clean the electrodes and treat another cup of water for 25 minutes. Now I am confused...it seems like they MOSTLY say yellow....