Ed, I suggest you order the set of free handbooks from Omega. I have volume 28, but I think there have been updates. You can order them off of their web page at www.omega.com. According to their pH and conductivity handbook, page Z-14: The units for conductivity are mhos (inverse ohms) = Siemens. The units for resistivity are ohms. Conductance = 1 / Resistance Thus, 1 micromho = 1 x 10^-6 mhos = 1 ohm / (1 x 10^-6) = 1 megaohm. From the example in the handbook, 20 micromhos = 50,000 ohms. There are usually probe constants associated with conductivity/resistivity meters which define the volume of solution between the probe electrodes. As a result, a distance unit (cm for example) is usually included in the conductivity or resistivity units. Perhaps the distance unit is confusing the conversion. ---------- From: Ed Cosper To: [log in to unmask] Subject: Need help on conversion Date: Monday, May 05, 1997 9:59AM Can anyone tell me how to convert micromhos to megohms. I was told that 1 micromho represent 1 megohm but according to the myron L EP meter that is being used, the it doesn't seem to be 1 to 1. Ed *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * *************************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************