ASTM D2977-22
(Practice)Standard Practice for Particle Size Range of Peat Materials for Horticultural Purposes
Standard Practice for Particle Size Range of Peat Materials for Horticultural Purposes
SIGNIFICANCE AND USE
5.1 This practice is primarily used in the horticulture industry to separates peat material into arbitrary fractions based on particle size. Physical separation of peat material according to particle size provides a useful indicator of the properties of a peat specimen such as pore space and degree of decomposition for unprocessed peat. It also provides a means of determining the amount of foreign matter not in a divided state such as sticks, stones, and glass.
Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.
SCOPE
1.1 Peat materials consist of particles with various sizes. This practice covers the separation of peat particles into coarse, medium, and fine size fractions using the 2.36 mm (No. 8) and 0.850 mm (No. 20) sieves equipped with cover and bottom pan. This practice is applicable for peat materials used in the horticultural industry and can be used to verify the degree of decomposition of peat and to determine the foreign matter content.
1.2 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only and are not considered standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard.
1.2.1 It is common practice in the engineering/construction profession to concurrently use pounds to represent both a unit of mass (lbm) and of force (lbf). This practice implicitly combines two separate systems of units; the absolute and the gravitational systems. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. As stated, this standard includes the gravitational system of inch-pound units and does not use/present the slug unit of mass. However, the use of balances and scales recording pounds of mass (lbm) or recording density in lbm/ft3 shall not be regarded as nonconformance with this standard.
1.3 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.
1.3.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.
1.4 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.
1.5 This standard does not purport to address all of the safety concerns, if any...
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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: D2977 − 22
Standard Practice for
Particle Size Range of Peat Materials for Horticultural
1
Purposes
This standard is issued under the fixed designation D2977; 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* increase or reduce significant digits of reported data to be
commensuratewiththeseconsiderations.Itisbeyondthescope
1.1 Peat materials consist of particles with various sizes.
of this standard to consider significant digits used in analysis
Thispracticecoverstheseparationofpeatparticlesintocoarse,
methods for engineering design.
medium, and fine size fractions using the 2.36 mm (No. 8) and
0.850 mm (No. 20) sieves equipped with cover and bottom 1.4 This practice offers a set of instructions for performing
pan. This practice is applicable for peat materials used in the one or more specific operations. This document cannot replace
horticultural industry and can be used to verify the degree of education or experience and should be used in conjunction
decomposition of peat and to determine the foreign matter with professional judgment. Not all aspects of this practice may
content. be applicable in all circumstances. This ASTM standard is not
intended to represent or replace the standard of care by which
1.2 Units—The values stated in SI units are to be regarded
the adequacy of a given professional service must be judged,
as standard. The values given in parentheses are provided for
nor should this document be applied without consideration of
information only and are not considered standard. Reporting of
a project’s many unique aspects. The word “Standard” in the
test results in units other than SI shall not be regarded as
title of this document means only that the document has been
nonconformance with this standard.
approved through the ASTM consensus process.
1.2.1 It is common practice in the engineering/construction
1.5 This standard does not purport to address all of the
profession to concurrently use pounds to represent both a unit
safety concerns, if any, associated with its use. It is the
of mass (lbm) and of force (lbf). This practice implicitly
responsibility of the user of this standard to establish appro-
combines two separate systems of units; the absolute and the
priate safety, health, and environmental practices and deter-
gravitational systems. It is scientifically undesirable to com-
mine the applicability of regulatory limitations prior to use.
bine the use of two separate sets of inch-pound units within a
1.6 This international standard was developed in accor-
single standard. As stated, this standard includes the gravita-
dance with internationally recognized principles on standard-
tional system of inch-pound units and does not use/present the
ization established in the Decision on Principles for the
slug unit of mass. However, the use of balances and scales
3
Development of International Standards, Guides and Recom-
recording pounds of mass (lbm) or recording density in lbm/ft
mendations issued by the World Trade Organization Technical
shall not be regarded as nonconformance with this standard.
Barriers to Trade (TBT) Committee.
1.3 All observed and calculated values shall conform to the
guidelines for significant digits and rounding established in
2. Referenced Documents
Practice D6026.
2
2.1 ASTM Standards:
1.3.1 Theproceduresusedtospecifyhowdataarecollected/
D653 Terminology Relating to Soil, Rock, and Contained
recorded or calculated in this standard are regarded as the
Fluids
industry standard. In addition, they are representative of the
D2974 Test Methods for Determining the Water (Moisture)
significant digits that generally should be retained. The proce-
Content, Ash Content, and Organic Material of Peat and
dures used do not consider material variation, purpose for
Other Organic Soils
obtaining the data, special purpose studies, or any consider-
D3740 Practice for Minimum Requirements for Agencies
ations for the user’s objectives; and it is common practice to
Engaged in Testing and/or Inspection of Soil and Rock as
Used in Engineering Design and Construction
1
This practice is under the jurisdiction of ASTM Committee D18 on Soil and
Rock and is the direct responsibility of Subcommittee D18.22 on Media for Plant
2
Growth. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2022. Published October 2022. Originally contact ASTM Customer Service at serv
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2977 − 14 D2977 − 22
Standard Practice for
Particle Size Range of Peat Materials for Horticultural
1
Purposes
This standard is issued under the fixed designation D2977; 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*
1.1 Peat materials consist of particles with various sizes. This practice covers measurement of the mass percentage of fractions
of a peat material defined in terms of selected ranges of screen sizes.the separation of peat particles into coarse, medium, and fine
size fractions using the 2.36 mm (No. 8) and 0.850 mm (No. 20) sieves equipped with cover and bottom pan. This practice is
applicable for peat materials used in the horticultural industry and can be used to verify the degree of decomposition of peat and
to determine the foreign matter content.
1.2 Units—The values stated in SI units are being to be regarded as standard. Units of inch-pound The values given in parentheses
are provided for information only.only and are not considered standard. Reporting of test results in units other than SI shall not
be regarded as nonconformance with this standard.
1.2.1 It is common practice in the engineering/construction profession to concurrently use pounds to represent both a unit of mass
(lbm) and of force (lbf). This practice implicitly combines two separate systems of units; the absolute and the gravitational systems.
It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. As stated, this
standard includes the gravitational system of inch-pound units and does not use/present the slug unit of mass. However, the use
3
of balances and scales recording pounds of mass (lbm) or recording density in lbm/ft shall not be regarded as nonconformance
with this standard.
1.3 All measuredobserved and calculated values shall conform to the guidelines for significant digits and rounding established in
Practice D6026.
1.3.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as the industry
standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not
consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives;
and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations.
It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.
1.4 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace
education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be
applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the
1
This practice is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.22 on Soil as a Medium Media
for Plant Growth.
Current edition approved Nov. 1, 2014Oct. 1, 2022. Published November 2014October 2022. Originally approved in 1971. Last previous edition approved in 20032014
as D2977 – 03, which was withdrawn February 2012 and reinstated in November 2014. DOI:10.1520/D2977-14.14. DOI:10.1520/D2977-22.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D2977 − 22
adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s
many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through
the ASTM consensus process.
1.5 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 This international standard w
...
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