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

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