Designation:F2828−12AnAmericanNationalStandardStandardTestMethodforAssessingCarpetCleaningEffectivenessinTermsofVisualAppearanceChangeWhenCleanedwithaWetExtractionCleaningSystem1ThisstandardisissuedunderthefixeddesignationF2828;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodprovidesonlyalaboratorytestforvisuallydeterminingtherelativecarpetcleaningeffectivenessofawetextractioncleaningsystemwhentestedunderstandardconditions.1.2Thistestmethodisapplicabletotypesofupright,canister,andcombinationwetextractioncleanersandtheirrecommendedchemicalcleaningformulasintendedforclean-ingcarpetsasaprimaryorsecondaryfunction.Thistestmethodexcludespre-spraysystemsorpre-spraytreatments.1.3Thistestmethodisnotapplicabletoupholsterycleaningorbarefloorcleaning.1.4Thistestmethodappliesonlytothecleaningofembed-dedsoilfromcarpet,nottheremovalofsurfacelitteranddebris.1.5Thismethoddoesnotdirectlyquantifytheamountofsoilremovedbutisvisuallyassessedbyemployingcolorimet-ricinstrumentation.1.6Units—ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D6540TestMethodforAcceleratedSoilingofPileYarnFloorCoveringE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodF608TestMethodforEvaluationofCar...
