ASTM D 4972 : 2013
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Test Method for pH of Soils
Hardcopy , PDF
07-08-2018
English
01-11-2013
Important note : All end users must be registered with an Account prior to user licenses being assigned.| Committee |
D 18
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| DocumentType |
Test Method
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| Pages |
4
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| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
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| SupersededBy | |
| Supersedes |
1.1This test method covers the measurement of the pH of soils for uses other than for corrosion testing. Such measurements are used in the agricultural, environmental, and natural resources fields. This measurement determines the degree of acidity or alkalinity in soil materials suspended in water and a 0.01 M calcium chloride solution. Measurements in both liquids are necessary to fully define the soil's pH. This variable is useful in determining the solubility of soil minerals and the mobility of ions in the soil and assessing the viability of the soil-plant environment. A more detailed discussion of the usefulness of this parameter is not warranted here; however, it can be found in many discussions of the subject. A few such discussions are given as Refs (1-6)2 at the end of the text.
1.2The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3All measured and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.
1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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