1、Designation:D129095(Reapproved 2021)Standard Test Method forSediment in Water-Emulsion Polishes by Centrifuge1This standard is issued under the fixed designation D1290;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of sedimentin water-emulsion polishes by means of a centrifuge.1.2 The values stated i
3、n SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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
4、environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 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 St
5、andards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1796 Test Method for Water and Sediment in Fuel Oils bythe Centrifuge Method(Laboratory Procedure)3.Significance and Use3.1 This test method
6、determines the amount of sediment inwater-emulsion polishes.Sediment is generally believed tohave negative effects on water-emulsion polish properties.4.Apparatus4.1 Centrifuge and Tubes,conforming to Paragraphs 5.1 and5.2 on Centrifuge and Centrifuge Tubes of Test Method D1796.5.Sample5.1 The sampl
7、e shall be thoroughly representative of thematerial in question,and the portion used for the test shall bethoroughly representative of the sample itself.6.Procedure6.1 Measure 100 mLof the water-emulsion wax into each oftwo centrifuge tubes and stopper the tubes.Balance the twotubes in their holders
8、.6.2 Place the two tubes on opposite sides of the head andwhirl for 10 min at a rate,calculated from the equation inParagraph 5.1.5 under Centrifuge of Test Method D1796,sufficient to produce a relative centrifugal force(rcf)ofbetween 500 and 700 at the tips of the whirling tubes(see Table2,Rotation
9、 Speeds Applicable for Centrifuges of VariousDiameters of Swing,of Test Method D1796 for relationshipbetween diameter of swing,rcf,and rpm).6.3 Read the volume of sediment in each tube,estimating tothe nearest 0.1 mL if necessary.Record the average of the tworeadings as the percentage of sediment by
10、 the centrifugemethod.7.Precision and Bias7.1 PrecisionInterlaboratory and intralaboratory duplicatedeterminations of sediment by this test method should notdiffer by more than 0.2 mL.7.2 BiasThis test method has no bias because the resultsdeveloped are defined in terms of this test method.8.Keyword
11、s8.1 centrifuge;polishes;sediment;water-emulsions1This test method is under the jurisdiction ofASTM Committee D21 on Polishesand is the direct responsibility of Subcommittee D21.03 on Chemical and PhysicalTestingCurrent edition approved March 1,2021.Published March 2021.Originallyapproved in 1953.La
12、st previous edition approved in 2015 as D1290 95(2015).DOI:10.1520/D1290-95R21.2For 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
13、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
14、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 stand
15、ard 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
16、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
