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Lab Services: Soil testing

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Test Method Title

Standard Test Method for pH of Soils.

Reference Number

ASTM D4972

Material

Soil

Test Property

pH

Description of Test

Measurement of the pH of soils in both suspensions of water and a calcium chloride solution are made with either a potentiometer using a pH sensitive electrode system (Method A), or pH sensitive paper (Method B). The potentiometer is calibrated with buffer solutions of known pH. The pH sensitive paper is a less accurate measurement and should only be used for a rough estimate of the soil pH. The electrode must be used for this measurement unless the pH sensitive paper is specified.

Preferred Test Sample Size

1 drillers jar

Number of Test Specimens

1

Test Specimen Size

10g dry, passing the #10 sieve

Keywords

moisture; swelling soils, pH, corrosion

For more information, contact GeoTesting Express:



Atlanta

770.645.6575


Boston

978.635.0424


Chicago

224.676.1371


New York

212.566.6630



info@geotesting.com

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