Bob Beck certainly got the ball rolling with the 3 9v batteries and two silver wires. Technology has progressed since then. Now we have the automatic current controlled units and CS companies that have made advances in CS production. There really is no final authority on CS production at this time. The leaders in the field can't even agree upon the testing procedure to arrive at a conclusion. Meanwhile thank God at least we know that what we have is working for us. If you want to have your own CS tested Natural Immunogenics will test it for you. Frank keys Colloidal Science Lab will might also test it for you. Between the two you would then know how good your CS is. I believe the basic fee is $75 to find out ppm and particle size.