1、Designation:D294422Standard Practice ofSampling Processed Peat Materials for HorticulturalPurposes1This standard is issued under the fixed designation D2944;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A
2、number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This practice covers the procedure for obtaining arepresentative sample of processed peat material from com-pressed bales or bulk loose ma
3、terial sources.This procedure isapplicable for sampling peat materials for horticultural pur-poses and produces a sample that is representative of peatmaterials that may be heterogeneous in nature.Producing arepresentative sample of a material is central to the validity ofthe results for any testing
4、 or analytical procedure which can beused to verify the grade of peat.1.2 UnitsThe values stated in SI units are to be regardedas the standard.The values given in parentheses are providedfor information only and are not considered standard.1.3 All observed and calculated values shall confirm to theg
5、uidelines for significant digits and rounding established inPractice D6026.1.3.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as theindustry standard.In addition,they are representative of thesignificant digits that generally should be re
6、tained.The proce-dures used do not consider material variation,purpose forobtaining the data,special purpose studies,or any consider-ations for the users objectives;and it is common practice toincrease or reduce significant digits of reported data to becommensurate with these considerations.It is be
7、yond the scopeof this standard to consider significant digits used in analysismethods for engineering design.1.4 This practice offers a set of instructions for performingone or more specific operations.This document cannot replaceeducation or experience and should be used in conjunctionwith professi
8、onal judgment.Not all aspects of this practice maybe applicable in all circumstances.This ASTM standard is notintended to represent or replace the standard of care by whichthe adequacy of a given professional service must be judged,nor should this document be applied without consideration ofa projec
9、ts many unique aspects.The word”Standard”in thetitle of this document means only that the document has beenapproved though the ASTM consensus process.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this sta
10、ndard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on
11、 Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD3740 Practice for Minimum Require
12、ments for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Use in Soil,Rock,andConstruction Materials TestingD6026 Practice for Using Significant Digits and
13、 Data Re-cords in Geotechnical Data3.Terminology3.1 Definitions:3.1.1 For definitions of common technical terms used in thisstandard,refer to Terminology D653.4.Summary of Practice4.1 For compressed peat bales,a slotted tube corer is used atmultiple locations to obtain subsamples of material.For bul
14、kstockpiles,a shovel is used at multiple locations to obtain1This practice is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.22 on Media for PlantGrowth.Current edition approved May 1,2022.Published May 2022.Originallyapproved in 197
15、1.Last previous edition approved in 2014 as D2944 14.DOI:10.1520/D2944-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM
16、website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1subs
