Re: yellow color left on glass container

Unfortunately you have no limiting of voltage/current on your unit which allows you to make a high quality, clear, colorless CS. The yellow/brown CS indicates larger particles which is usable but not the most bio-available. Most likely the larger silver particles are reacting with the glass somehow. If you can swing it the Silverpuppy ($125) which has current/voltage control, will allow you to make quality CS on the level of the best CS on the market. I don't know of any less expensive units on the market that have current/voltage limiting built in.

Blessings
Steve