Dear David: I have the synchrometer and understand in a general kind of way how it is supposed to work, and how potentially useful it would be. Unfortunately, even after a number of attempts with the instruction book and the video, it seems that I'm physiologically [due to tinnitis and partial hearing loss] and/or intellectually, incapable of using the synchrometer. I want to find someone I could trust and PAY THEM to test my water, supplements, me, etc. Even after attending the conference this past weekend in Chicago and being online seemingly forever, I still can't find anyone. I'm considering just running an ad in my local paper soliciting anyone I could pay to LEARN the technique. I'm running out of time. Katherine [(740)775-0148] or Katherinehine@hotmail.com