ASTM D3975-93(2019)
(Practice)Standard Practice for Development and Use (Preparation) of Samples for Collaborative Testing of Methods for Analysis of Sediments
Standard Practice for Development and Use (Preparation) of Samples for Collaborative Testing of Methods for Analysis of Sediments
SIGNIFICANCE AND USE
5.1 The objective of this practice is to provide guidelines for the preparation of samples for use in collaborative tests, to evaluate methods during their development, and for the evaluation of the precision and bias of proposed test methods.
5.2 Statements of the precision and bias are a mandatory part of ASTM test methods. Such an evaluation is necessary to provide guidance to the user as to the reliability of measurements that can be expected by its use. The statements are developed on the basis of user experience (ordinarily collaborative tests) with the test method.
5.3 The availability of test samples is a key requirement for collaborative evaluation of test methods.
SCOPE
1.1 This practice establishes uniform general procedures for the development (preparation) and use of samples in the collaborative testing of methods for chemical analysis of sediments and similar materials.
1.2 The principles of this practice are applicable to aqueous samples with suitable technical modifications.
1.3 This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D3975 − 93 (Reapproved 2019)
Standard Practice for
Development and Use (Preparation) of Samples for
1
Collaborative Testing of Methods for Analysis of Sediments
This standard is issued under the fixed designation D3975; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This practice establishes uniform general procedures for
3.1 Definitions:
the development (preparation) and use of samples in the
3.1.1 For definitions of terms used in this standard, refer to
collaborative testing of methods for chemical analysis of
Terminology D1129.
sediments and similar materials.
4. Summary of Practice
1.2 The principles of this practice are applicable to aqueous
samples with suitable technical modifications.
4.1 Test samples of adequately defined composition and
1.3 This standard does not purport to address all of the homogeneity are required for evaluating the precision and bias
safety concerns, if any, associated with its use. It is the of test methods.These samples should be typical in all respects
responsibility of the user of this standard to establish appro- to the sample for which the test method is applicable. Samples
priate safety, health, and environmental practices and deter- with three levels of concentration of the measurand are
mine the applicability of regulatory limitations prior to use. recommended to evaluate the linearity of the test method.
1.4 This international standard was developed in accor- Acceptable test materials, in order of preference are: three
samples of different compositions; mixtures of two samples to
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the obtain the desired concentration levels; samples prepared by
dilution of a single sample.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4.2 In the absence of samples of known composition, the
Barriers to Trade (TBT) Committee.
use of the spiking technique, in which standard additions of
knownconstituentsaremadebyestablishedtechniques,willbe
2. Referenced Documents
acceptable for evaluating the linearity and the bias of test
2
2.1 ASTM Standards: methods. In such a case, the bias statement will consist of the
D596 Guide for Reporting Results of Analysis of Water accuracy of recovery of the spike.
D1129 Terminology Relating to Water
4.3 Comparison of a candidate test method with a standard
D2777 Practice for Determination of Precision and Bias of
test method of known precision and bias will constitute an
Applicable Test Methods of Committee D19 on Water
acceptable technique for evaluation of precision and bias. In
D3670 Guide for Determination of Precision and Bias of
such comparative measurements, any convenient test samples
Methods of Committee D22
may be used, provided they are shown to be stable during the
D3976 Practice for Preparation of Sediment Samples for
time required to make the intercomparison, and that the
Chemical Analysis
measurement sequences are chosen to minimize or eliminate
E691 Practice for Conducting an Interlaboratory Study to
errors due to sample instability.
Determine the Precision of a Test Method
5. Significance and Use
5.1 Theobjectiveofthispracticeistoprovideguidelinesfor
1
This practice is under the jurisdiction of ASTM Committee D19 on Water and
the preparation of samples for use in collaborative tests, to
is the direct responsibility of Subcommittee D19.07 on Sediments, Geomorphology,
and Open-Channel Flow.
evaluate methods during their development, and for the evalu-
Current edition approved Nov. 1, 2019. Published December 2019. Originally
ation of the precision and bias of proposed test methods.
approved in 1980. Last previous edition approved in 2014 as D3975 – 93 (2014).
DOI: 10.1520/D3975-93R19.
5.2 Statements of the precision and bias are a mandatory
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
part ofASTM test methods. Such an evaluation is necessary to
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
provide guidance to the user as to the reliability of measure-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ments that can be expected by its use. The statements are
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-295
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.