1、Designation:F282812An American National StandardStandard Test Method forAssessing Carpet Cleaning Effectiveness in Terms of VisualAppearance Change When Cleaned with a Wet ExtractionCleaning System1This standard is issued under the fixed designation F2828;the number immediately following the designa
2、tion 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.1.Scope1.1 This test method provides only a laborat
3、ory test forvisually determining the relative carpet cleaning effectivenessof a wet extraction cleaning system when tested under standardconditions.1.2 This test method is applicable to types of upright,canister,and combination wet extraction cleaners and theirrecommended chemical cleaning formulas
4、intended for clean-ing carpets as a primary or secondary function.This testmethod excludes pre-spray systems or pre-spray treatments.1.3 This test method is not applicable to upholstery cleaningor bare floor cleaning.1.4 This test method applies only to the cleaning of embed-ded soil from carpet,not
5、 the removal of surface litter anddebris.1.5 This method does not directly quantify the amount ofsoil removed but is visually assessed by employing colorimet-ric instrumentation.1.6 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard.Thevalues stat
6、ed in each system may not be exact equivalents;therefore,each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.I
7、t is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D6540 Test Method for Accelerated Soiling of Pile YarnFloor CoveringE177 Practic
8、e for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodF608 Test Method for Evaluation of Carpet Embedded DirtRemovalEffectivenessofHousehold/CommercialVacuum CleanersF655 Specification for Test Car
9、pets and Pads for VacuumCleaner Testing3.Terminology3.1 Definitions:3.1.1 cleaning effectiveness,wet,nthe potential of a wetextractor cleaner to restore the appearance of a soiled carpet.3.1.2 cleaning system,nwet extraction appliance coupledwith its included or recommended chemical cleaning formula
10、.3.1.3 model,nthe designation of a group of wet extractioncleaners having identical mechanical and electrical construc-tion with only cosmetic or nonfunctional differences.3.1.4 population,nthe total of all units of a particularmodel wet extraction cleaner being tested.3.1.5 sample,na group of extra
11、ction cleaners taken froma large collection of extraction cleaners of one particular modelwhich serves to provide information that may be used as a basisfor making a decision concerning the larger collection.3.1.6 test run,nthe definitive procedure that produces asingular measured result.3.1.7 unit,
12、na single wet extraction cleaner of the modelbeing tested.1This test method is under the jurisdiction ofASTM Committee F11 on VacuumCleaners and is the direct responsibility of Subcommittee F11.35 on ExtractorCleaners.Current edition approved July 1,2012.Published August 2012.DOI:10.1520/F2828-12.2F
13、or 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
14、Conshohocken,PA 19428-2959.United States1 3.1.8 wet stroke,na single pass across the test carpet inone direction with the application of the cleaning solution.3.1.9 dry stroke,na single pass across the test carpet inone direction without the application of any cleaning solution.3.1.10 Delta-E(E),na
15、single number representing thedistance in color space between two colors.Delta-E is derivedmathematically and is used in colorimetry to evaluate theextent of color differences and change.4.Significance and Use4.1 This test method will provide an indication of theeffectiveness of the cleaning system
16、at restoring the appearanceof an artificially soiled carpet by wet extraction cleaning.Thecleaning effectiveness in the laboratory test may not be thesame as in home cleaning due to variations in the homes,carpets,soils,and other factors.4.2 In order to provide a uniform basis for measuring theperformance described in section 1.1,standardized test carpet,test pad,and test soil are employed in this procedure.5.Apparatus5.1 Weighing Scale(for weighing test materials andcarpets)Accurate to 0.01 g(0