Soil Resistivity

-Field Measurement of Soil Resistivity Using the Wenner Four-Electrode Method (ASTM G57-06)

Scope:

This test method covers the equipment and procedures for the field measurement of soil resistivity, both in situ and for samples removed from the ground, for use in the control of corrosion of buried structures.

The Wenner four-electrode method requires that four metal electrodes be placed with equal separation in a straight line in the surface of the soil to a depth not exceeding 5 % of the minimum separation of the electrodes. The electrode separation should be selected with consideration of the soil strata of interest. The resulting resistivity measurement represents the average resistivity of a hemisphere of soil of a radius equal to the electrode separation. 

 

Method Data

Method G57
Hold Time
Preservation
Sample Volume250mL HDPE bottle
Collection MethodGrab sampling
InstrumentationWenner Four Pin
Method RefernceASTM G57

Analyte List

AnalyteFormulaCAS Number
Oxidation Reduction Potential

* The typical detection limits and analytes are displayed for this particular method. Please contact Specialty Analytical if other analytes or detection limits are required in addition to the 200.8 Analyte List.

Soil Resistivity

-Determining Minimum Laboratory Soil Resistivity (AASHTO T288-91)

Scope:

This test method covers the laboratory determination for the minimum resitivity of a soil. 

The principal use of this test method is to determine a soil’s corrosivity and thereby identify the conditions under which the corrosion of metals in soil may be sharply accentuated. This standard is  divided into two parts. The first part involves obtaining and preparing the sample to size for testing, and the second part describes the test method for determing the minimum laboratory soil resisitvity.

 

Method Data

Method T288-91
Hold Time
Preservation
Sample Volume
Collection MethodGrab sampling
InstrumentationWenner Four Pin
Method RefernceAASHTO T 288-91

Analyte List

AnalyteFormulaCAS Number
Oxidation Reduction Potential

* The typical detection limits and analytes are displayed for this particular method. Please contact Specialty Analytical if other analytes or detection limits are required in addition to the 200.8 Analyte List.

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