Re: yellow color left on glass container

Hi,
The change in color of the second electrode is an indication that the particular volume of water used has reached saturation point. The level of silver particles in suspension has reached a level where the conductivity of the water is causing silver to be plated from one electrode to the other. With low voltage machines, generally the concentration plateaus at this point and using water at room temperature this happens at around eight PPM. Extending the process beyond this time will only result in minute increases in concentration. Aglomaration begins to come into play, as particles begin to stick together forming larger clusters which will generally fall out of suspension leaving a gray residue on the bottom of the container. Again this not a means of judging concentration, it's a simple indication of when to stop.For a given volume of water this is as concentrated as it's going to get.