ASTM_D_4670_-_17_2022e1.pdf

Designation:D467017(Reapproved 2022)1Standard Test Method forPolyurethane Raw Materials:Determination of SuspendedMatter in Polyols1This standard is issued under the fixed designation D4670;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEReapproved with editorial changes in July 2022.1.Scope1.1 This test method covers a procedure for visual inspec-tion to determine the presence of insoluble foreign material inpolyols.1.2 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 standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE1There is no known ISO equivalent to this standard.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on 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:2D883 Terminology Relating to Plastics3.Terminology3.1 Terminology in this test method is in accordance withTerminology D883.4.Significance and Use4.1 This test method is suitable as a quality control orspecification test.5.Procedure5.1 Invert a colorless,transparent glass bottle containing thewell-mixed sample and examine by transmitted light for thepresence of suspended matter.6.Report6.1 Report the presence or absence of suspended matter.7.Precision and Bias7.1 No statement is made about the precision or the biassince this test method merely states whether suspended matteris detected or not.8.Keywords8.1 polyols;polyurethane raw materials;suspended matter1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.22 on Cellular Materials-Plastics and Elastomers.It was recommended to ASTM by the Center for thePolyurethanes Industry Polyurethane Raw Material Analysis Workgroup.Current edition approved July 1,2022.Published July 2022.Originally approvedin 1987.Last previous edition approved in 2017 as D4670 17.DOI:10.1520/D4670-17R22E01.2For 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 website.Copyright 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.1ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.Users of this standard are expressly advised that determination of the validity of any such patent rights,and the riskof infringement of such rights,are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters.Your comments will receive careful consideration at a meeting of theresponsible technical committee,which you may attend.If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards,at the address shown below.This standard is copyrighted by ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.Individual reprints(single or multiple copies)of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585(phone),610-832-9555(fax),or serviceastm.org(e-mail);or through the ASTM website(www.astm.org).Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center,222Rosewood Drive,Danvers,MA 01923,Tel:(978)646-2600;http:/ 17(2022)12