ASTM_E_1593_-_13.pdf

Designation:E159313Standard Guide forAssessing the Efficacy of Air Care Products in Reducing thePerception of Indoor Malodor1This standard is issued under the fixed designation E1593;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.1.Scope1.1 This guide covers standard procedures for the quantita-tive sensory assessment of perceived olfactory intensity ofindoor malodors for the purpose of assessing the deodorantefficacy of air care products.This guide is limited to staticconditions only.1.2 It is recognized that,though sometimes desirable,theuse of actual“live”or formulated live malodors is oftenimpractical due to the inherent variability of the malodorsources.A live malodor source may be used when practical.However,the use of a formulated odor source has severaladvantages,including consistency and availability.1.3 The reader should be aware of good sensory practiceswhen preparing the test environment or substrate,developingand training the panel.1.4 The researcher is responsible for identifying the mostappropriate test design and using the appropriate statistical toolto address the experimental design.1.5 This guide is a compendium of information or series ofoptions that does not recommend a specific course of action.This guide is not intended to support claims.If the researchobjective is claim related,then the researcher needs to refer toGuide E1958.1.6 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.7 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 limitations prior to use.Specific precau-tionary statements are given in Section 6 and X3.6.3.7.2.Referenced Documents2.1 ASTM Standards:2E253 Terminology Relating to Sensory Evaluation of Mate-rials and ProductsE544 Practices for Referencing Suprathreshold Odor Inten-sityE1958 Guide for Sensory Claim Substantiation3.Terminology3.1 For other definitions,see Terminology E253.3.2 Definitions:3.2.1 activation timethe length of time that a product ispermitted to be exposed in a chamber prior to evaluation byassessors.3.2.2 assessora general term for any individual respond-ing to a stimuli in a sensory test.3.2.3 malodoran olfactory stimulus that,when detected,isconsidered unpleasant or undesirable by the target population.3.2.4 malodor controla test sample or experimental treat-ment consisting of a chamber containing a malodor withoutany additional malodor reducing treatment.3.2.5 malodor reduction effcacythe degree to which aproduct treatment or process reduces perceived malodor inten-sity.3.2.6 maskingthe reduction or elimination of olfactoryperception of a defined odor stimulus by means of anotherodorous substance without the physical removal or chemicalalteration of the defined stimulus from the environment.3.2.7 panela group of assessors chosen to participate in asensory test.3.2.8 product controla treatment consisting of a chambercontaining product only.3.2.9 spray timethe length of time in seconds for which anair care product is sprayed with the actuator depressed fully.1This guide is under the jurisdiction of ASTM Committee E18 on SensoryEvaluation and is the direct responsibility of Subcommittee E18.07 on PersonalCare and Household Evaluation.Current edition approved May 1,2013.Published May 2013.Originallyapproved in 1994.Last previous edition approved in 2006 as E1593 06.DOI:10.1520/E1593-13.2For 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 States1 3.2.10 synthetic modela mixture of chemical componentsused to represent an odor.3.2.11 trained assessoran assessor with a high degree ofsensory acuity and has experience in the test procedure and anestablished ability to make consistent and repeated sensoryassessments.A trained assessor functions as a member of asensory panel.3.2.12 treatmentwithin this guide,treatment refers to theact or manner in which one treats the area or applies to asubstrate for testing.4.Summary of Guide4.1 This practice is limited to the assessment of a specificmalodor intensity by trained assessors under controlled labo-ratory conditions.Methods that reflect actual consumer envi-ronmental conditions are valid for selected sensory tasks,butthey may be