ASTM E1593-13

Standard Guide for Assessing the Efficacy of Air Care Products in Reducing the Perception of Indoor Malodor

SIGNIFICANCE AND USE
5.1 The purpose of this guide is to assess the ability of air care products to reduce indoor air malodor intensity from a control state. Several experimental hypotheses are possible, depending on the objective of the test. Possible objectives with respective hypotheses are given in Appendix X1.  
5.2 Air care products are sold commercially with the intent of providing a means of improving the odor quality of a volume of air, relative to some existing environmental condition. This typically involves the application of an odorous substance into the air space by means of some mechanical or physical mechanisms (for example, air fresheners). When the existing environment includes some undesirable odor source or malodor, reduction of the perception of the malodor is usually accomplished with other odorous substances by masking. This procedure is also applicable to other mechanisms of odor reduction (for example, air filtration).  
5.3 Selection of representative malodor sources is of critical importance. The malodor source must be readily available and of a consistent odor quality. A reasonable malodor source should be chemically and aesthetically correct. The experimenter and client must agree upon the appropriateness of a malodor source before further details of the test design are worked out. Experimental variation will be reduced by using uniform malodor sources. Information collected on malodor reduction will thus be more comparable from experiment to experiment and from laboratory to laboratory.  
5.4 The procedure recommended can be used for assessment of the malodor efficacy of air care product (for example, air fresheners and air filtration).  
5.5 These procedures can be used to assess efficacy against any standard malodor.  
5.6 These procedures are applicable in the assessment of any products that reduce the perception of any malodor, regardless of the mode of action.  
5.6.1 These procedures are applicable to aerosol/spray and continuous/solid air fresh...
SCOPE
1.1 This guide covers standard procedures for the quantitative sensory assessment of perceived olfactory intensity of indoor malodors for the purpose of assessing the deodorant efficacy of air care products. This guide is limited to static conditions only.  
1.2 It is recognized that, though sometimes desirable, the use of actual “live” or formulated live malodors is often impractical due to the inherent variability of the malodor sources. A live malodor source may be used when practical. However, the use of a formulated odor source has several advantages, including consistency and availability.  
1.3 The reader should be aware of good sensory practices when preparing the test environment or substrate, developing and training the panel.  
1.4 The researcher is responsible for identifying the most appropriate test design and using the appropriate statistical tool to address the experimental design.  
1.5 This guide is a compendium of information or series of options that does not recommend a specific course of action. This guide is not intended to support claims. If the research objective is claim related, then the researcher needs to refer to Guide E1958.  
1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 6 and X3.6.3.7.

General Information

• Status: Historical
• Publication Date: 30-Apr-2013
• ICS: 71.100.70 - Cosmetics. Toiletries
• Technical Committee: E18 - Sensory Evaluation
• Drafting Committee: E18.07 - Personal Care and Household Evaluation

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1593 − 13
Standard Guide for
Assessing the Efficacy of Air Care Products in Reducing the
1
Perception of Indoor Malodor
This standard is issued under the fixed designation E1593; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This guide covers standard procedures for the quantita-
tive sensory assessment of perceived olfactory intensity of E253Terminology Relating to Sensory Evaluation of Mate-
rials and Products
indoor malodors for the purpose of assessing the deodorant
efficacy of air care products. This guide is limited to static E544Practices for Referencing Suprathreshold Odor Inten-
sity
conditions only.
E1958Guide for Sensory Claim Substantiation
1.2 It is recognized that, though sometimes desirable, the
use of actual “live” or formulated live malodors is often
3. Terminology
impractical due to the inherent variability of the malodor
sources. A live malodor source may be used when practical. 3.1 For other definitions, see Terminology E253.
However, the use of a formulated odor source has several
3.2 Definitions:
advantages, including consistency and availability.
3.2.1 activation time—the length of time that a product is
permitted to be exposed in a chamber prior to evaluation by
1.3 The reader should be aware of good sensory practices
when preparing the test environment or substrate, developing assessors.
and training the panel.
3.2.2 assessor—a general term for any individual respond-
ing to a stimuli in a sensory test.
1.4 The researcher is responsible for identifying the most
appropriatetestdesignandusingtheappropriatestatisticaltool
3.2.3 malodor—anolfactorystimulusthat,whendetected,is
to address the experimental design.
considered unpleasant or undesirable by the target population.
3.2.4 malodor control—a test sample or experimental treat-
1.5 This guide is a compendium of information or series of
ment consisting of a chamber containing a malodor without
options that does not recommend a specific course of action.
any additional malodor reducing treatment.
This guide is not intended to support claims. If the research
objective is claim related, then the researcher needs to refer to
3.2.5 malodor reduction effıcacy—the degree to which a
Guide E1958.
product treatment or process reduces perceived malodor inten-
sity.
1.6 Thevaluesstatedininch-poundunitsaretoberegarded
as standard. The values given in parentheses are mathematical
3.2.6 masking—the reduction or elimination of olfactory
conversions to SI units that are provided for information only perception of a defined odor stimulus by means of another
and are not considered standard.
odorous substance without the physical removal or chemical
alteration of the defined stimulus from the environment.
1.7 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.2.7 panel—a group of assessors chosen to participate in a
responsibility of the user of this standard to establish appro- sensory test.
priate safety and health practices and determine the applica-
3.2.8 product control—a treatment consisting of a chamber
bility of regulatory limitations prior to use. Specific precau-
containing product only.
tionary statements are given in Section 6 and X3.6.3.7.
3.2.9 spray time—thelengthoftimeinsecondsforwhichan
air care product is sprayed with the actuator depressed fully.
1
This guide is under the jurisdiction of ASTM Committee E18 on Sensory
Evaluation and is the direct responsibility of Subcommittee E18.07 on Personal
2
Care and Household Evaluation. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2013. Published May 2013. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1994. Last previous edition approved in 2006 as E1593–06. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E1593-13. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E1593 − 13
3.2.10 synthetic model—a mixture of chemical components ness of a malodor source before further details of the test
used to represent an odor. design are worked out. Experimental variation will be reduced
by using uniform malodor sources. Information collected on
3.2.11 trained assessor—an assessor with a high degree of
malodor reduction will thus be more comparable from experi-
sensory acuity a
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1593 − 06 E1593 − 13
Standard Guide for
Assessing the Efficacy of Air Care Products in Reducing
Sensorly Perceived Indoor Air Malodor Intensitythe
1
Perception of Indoor Malodor
This standard is issued under the fixed designation E1593; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This guide covers standard procedures for the quantitative sensory assessment of perceived olfactory intensity of indoor
malodors for the purpose of assessing the deodorant efficacy of air care products. This guide is limited to static conditions only.
1.2 It is recognized that, though sometimes desirable, the use of actual “live” or formulated live malodors is often impractical
due to the inherent variability of the malodor sources. A truelive malodor source may be used when practical. However, the use
of a formulated odor source has several advantages, including consistency and availability.
1.3 The reader should be aware of good sensory practices when preparing the test environment or substrate, developing and
training the panel.
1.4 The researcher is responsible for identifying the most appropriate test design and using the appropriate statistical tool to
address the experimental design.
1.5 This guide is a compendium of information or series of options that does not recommend a specific course of action. This
guide is not intended to support claims. If the research objective is claim related, then the researcher needs to refer to Guide E1958.
1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use. Specific precautionary statements are given in Section 6 and X3.6.3.7.
2. Referenced Documents
2
2.1 ASTM Standards:
E253 Terminology Relating to Sensory Evaluation of Materials and Products
E544 Practices for Referencing Suprathreshold Odor Intensity
E1958 Guide for Sensory Claim Substantiation
3
2.2 ASTMSpecial Technical Publications.
MNL 26, Sensory Testing Methods (revision of STP 434 Manual on Sensory Testing Methods)
STP 758, Guidelines for the Selection and Training of Sensory Panel Members
STP 913, Physical Requirement Guidelines for Sensory Evaluation Laboratories
3. Terminology
3.1 For other definitions, see Terminology E253.
3.2 Definitions:
3.1.1 For other definitions, see Terminology E253.
3.2.1 activation time—the length of time that a product is permitted to be exposed in a chamber prior to evaluation by assessors.
1
This guide is under the jurisdiction of ASTM Committee E18 on Sensory Evaluation and is the direct responsibility of Subcommittee E18.07 on Personal Care and
Household Evaluation.
Current edition approved May 1, 2006May 1, 2013. Published June 2006May 2013. Originally approved in 1994. Last previous edition approved in 19992006 as
E1593 – 94 (1999).E1593 – 06. DOI: 10.1520/E1593-06.10.1520/E1593-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1593 − 13
3.2.2 assessor—a general term for any individual responding to a stimuli in a sensory test.
3.2.3 malodor—an olfactory stimulus that, when detected, is considered unpleasant or undesirable by the target population.
3.2.4 malodor control—a test sample or experimental treatment consisting of a chamber containing a malodor without any
additional malodor reducing treatment.
3.2.5 malodor reduction effıcacy—the degree to which a product treatment or process reduces perceived malodor intensity.
3.2.6 masking—the reduction or elimination of olfactory perception of a defined odor stimulus by means of another odorous
substance without the physical
...