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USGS personnel collect a water-quality sample on the Missouri River. USGS/Photo by Kelly Brady.
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6.3 Specific electrical conductance
By D.B. Radtke, J.V. Davis, and F.D. Wilde
This section of Chapter 6 is available as a pdf file:
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Electrical conductance is a measure of the capacity of a substance to conduct an electrical current. The specific electrical conductance (conductivity) of water is a function of the types and quantities of dissolved substances it contains, normalized to a unit length and unit cross section at a specified temperature. This section of the National Field Manual (NFM) describes U.S. Geological Survey (USGS) guidance and protocols for measurement of conductivity in ground and surface waters.
6.3 Specific Electrical Conductance
6.3.1 Equipment and supplies
6.3.1.A Conductivity sensors
6.3.1.B Equipment maintenance
6.3.3.A Surface water
In situ measurement
6.3.3.B Ground water
Downhole and flowthrough-chamber measurement
Section 6.3 Archived Versions: