I am confused. (an admition) Ron quoted a collection report from Africa that said: "TDS 20 µSi 0.03" How can the TDS be 20 and then the Conductivity (Micro-S) be 0.03? I would think it would be more like 40 or 45. Can someone please "splain" it to this ig-no-ray-moose? Thanks, Boat --------------- See http://www.aka.org/AKA/subkillietalk.html to unsubscribe Join the AKA at http://www.aka.org/AKA/Applic.htm