1、Designation: D 4670 97 (Reapproved 2002)Standard Test Method forPolyurethane Raw Materials: Determination of SuspendedMatter In Polyols1This standard is issued under the fixed designation D 4670; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers a procedure for visual inspec-tion to determine the presence of inso
3、luble 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 and health practices and determine the applica-bility of regulatory limitat
4、ions prior to use.NOTE 1There is no similar or equivalent ISO standard.2. Referenced Documents2.1 ASTM Standards:D 883 Terminology Relating to Plastics23. Terminology3.1 Terminology in this test method is in accordance withTerminology D 883.4. Significance and Use4.1 This test method is suitable as
5、a quality control orspecification test.5. Procedure5.1 Invert a transparent glass bottle containing the sampleand examine by transmitted light for the presence of suspendedmatter.6. Report6.1 Report the presence or absence of suspended matter.7. Precision and Bias7.1 No statement is made about the p
6、recision or the biassince this test method merely states whether there is conform-ance to the criteria for success specified in the procedure.8. Keywords8.1 polyols; polyurethane raw materials; suspended matterASTM International takes no position respecting the validity of any patent rights asserted
7、 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
8、 responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.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 c
9、areful 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 Internati
10、onal, 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 th
11、e ASTM website(www.astm.org).1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.22 on Cellular MaterialsPlastics and Elastomers. It was recommended to ASTM by the Society of ThePlastics Industry Polyurethane Raw Materials
12、 Analysis Committee.Current edition approved November 10, 2002. Published January 2003. Origi-nally approved in 1987. Last previous edition approved in 1997 as D 4670 97.2Annual Book of ASTM Standards, Vol 08.01.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
