ASTM E2346/E2346M-15(2022)

Standard Guide for Sensory Evaluation of Household Hard Surface-Cleaning Products with Emphasis on Spray Triggers

SIGNIFICANCE AND USE
5.1 The methods outlined in this guide can be used to qualitatively and quantitatively evaluate the sensory characteristics and performance of trigger hard surface household cleaning products for nonporous surfaces.  
5.2 The methods are suited for descriptive analysis and may be adaptable for consumer acceptance research.  
5.3 This guide provides the procedure for the evaluation of package, application, performance, after-use and fragrance aspects of hard surface cleaners. Depending on the test objectives, all or some of these measures may be used.  
5.4 This guide is designed for use for product research guidance in product formulation, new product development, and quality control issues.  
5.5 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 for claim substantiation, as it has not been subjected to validation testing.  
5.6 This guide is for use by individuals who familiarize themselves with these procedures and who have previous experience with sensory evaluations. It is suggested that the individuals have some experience with developing and training a descriptive panel or work under the supervision of a sensory professional who has.  
5.7 This guide might involve hazardous materials. This guide does not claim to address all of the safety problems associated with its use. It is the responsibility of the user of this guide to establish appropriate safety and healthy practices and to determine the applicability of limitations prior to use.
SCOPE
1.1 This guide presents guidelines specific to the sensory evaluation of trigger hard surface cleaners. It covers the procedure for preparing a nonporous surface with the intent to measure one or all of the various aspects of a trigger product: package, application, performance, and after-use properties, with focus on visual, tactile, fragrance, performance, and package ergonomics. It is applicable for use with assessors, highly trained assessors, and consumers.  
1.2 This guide for preparing nonporous hard surfaces is intended to focus on surface preparation and evaluation, not on panel selection, training, or development.  
1.3 The reader should be aware that good sensory practices are required when preparing the surfaces, and in developing and training the assessors.  
1.4 The researcher is responsible for identifying the most appropriate test design and using the appropriate statistical tool to address that experimental design.  
1.5 Since this guide's intended use is to provide direction on the presentation and measurement of the different aspects of spray trigger hard surface cleaners, this guide may not accurately represent all possible soils and surfaces where spray trigger hard surface cleaners may be used.  
1.6 This guide provides suggested procedures and is not meant to exclude alternate procedures that may be effectively used to provide the same results.  
1.7 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated 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. Values are stated in only SI units when inch-pound units are not used in practice.  
1.8 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Techn...

General Information

• Status: Historical
• Publication Date: 30-Sep-2022
• ICS: 71.100.99 - Other products of the chemical industry
• 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: E2346/E2346M − 15 (Reapproved 2022)
Standard Guide for
Sensory Evaluation of Household Hard Surface-Cleaning
Products with Emphasis on Spray Triggers
ThisstandardisissuedunderthefixeddesignationE2346/E2346M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 1.8 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This guide presents guidelines specific to the sensory
responsibility of the user of this standard to establish appro-
evaluation of trigger hard surface cleaners. It covers the
priate safety, health, and environmental practices and deter-
procedure for preparing a nonporous surface with the intent to
mine the applicability of regulatory limitations prior to use.
measure one or all of the various aspects of a trigger product:
1.9 This international standard was developed in accor-
package, application, performance, and after-use properties,
dance with internationally recognized principles on standard-
with focus on visual, tactile, fragrance, performance, and
ization established in the Decision on Principles for the
package ergonomics. It is applicable for use with assessors,
Development of International Standards, Guides and Recom-
highly trained assessors, and consumers.
mendations issued by the World Trade Organization Technical
1.2 This guide for preparing nonporous hard surfaces is
Barriers to Trade (TBT) Committee.
intended to focus on surface preparation and evaluation, not on
panel selection, training, or development.
2. Referenced Documents
1.3 The reader should be aware that good sensory practices
2.1 ASTM Standards:
are required when preparing the surfaces, and in developing
D4265 Guide for Evaluating Stain Removal Performance in
and training the assessors.
Home Laundering
1.4 The researcher is responsible for identifying the most
D5343 Guide for Evaluating Cleaning Performance of Ce-
appropriate test design and using the appropriate statistical tool
ramic Tile Cleaners
to address that experimental design.
E253 Terminology Relating to Sensory Evaluation of Mate-
1.5 Sincethisguide’sintendeduseistoprovidedirectionon
rials and Products
the presentation and measurement of the different aspects of
2.2 ISO Documents:
spray trigger hard surface cleaners, this guide may not accu-
ISO 4121 Sensory Analysis—Methodology—Evaluation of
rately represent all possible soils and surfaces where spray
Food Products by Methods Using Scales and Categories
trigger hard surface cleaners may be used.
ISO 5492 Sensory Analysis—Vocabulary
1.6 This guide provides suggested procedures and is not
ISO 5496 Sensory Analysis—Methodology—Initiation and
meant to exclude alternate procedures that may be effectively
Training ofAssessors in the Detection and Recognition of
used to provide the same results.
Odors
ISO 6658 Sensory Analysis—Methodology—General Guid-
1.7 The values stated in either SI units or inch-pound units
ance
are to be regarded separately as standard. The values stated in
ISO 8586-1 Sensory Analysis—Methodology—General
each system may not be exact equivalents; therefore, each
Guidance for Choosing, Training and Monitoring of Se-
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance lected Assessors
with the standard. Values are stated in only SI units when ISO 11035 Sensory Analysis—Methodology— Identifica-
inch-pound units are not used in practice. tion of Descriptors for Establishing a Sensory Profile
1 2
This guide is under the jurisdiction of ASTM Committee E18 on Sensory For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Evaluationand is the direct responsibility of Subcommittee E18.07 on Personal Care contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
and Household Evaluation. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2022. Published October 2022. Originally the ASTM website.
approved in 2004. Last previous edition approved in 2015 as E2346/E2346M – 15. Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
DOI: 10.1520/E2346_E2346M-15R22. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E2346/E2346M − 15 (2022)
2.3 CSPA Test Methods: 6. Equipment
DCC-09 Glass Cleaners
6.1 The following equipment may be used during the
DCC-09A Standard Guide for Evaluating the Filming and
preparation or evaluation process:
Streaking of Glass Cleaners
6.1.1 Lights for a flat horizontal surface require overhead
DCC-12 Guidelines for Screening the Efficacy of Oven
lighting that simulates North Daylight (that is, Mac Beth
Cleaners
Lighting). See ASTM MNL 60 (1).
DCC-16 Guidelines for Evaluating the Efficacy of Bathroom
6.1.2 Lights for a vertical surface may use the Mac Beth
Cleaners Scrubber Test for Measuring the Removal of
portable light box.
Lime Soap
6.1.3 Surfaces identified as nonporous are: glass, ceramic,
sheet acrylic—also known as Formica®, porcelain, enamel,
3. Terminology
painted metal, stainless steel, and chrome. Other non-porous
3.1 Definitions of Terms Specific to This Standard: surfaces can be used depending on research objectives.
6.1.4 Test soil (refer to Guides D4265 and D5343 for
3.1.1 nonporous surface—refers to a solid material that
cannot be permeated by liquids. example soil formulas).
6.1.5 Metered sprayer.
6.1.6 Deionized water.
4. Summary of Guide
6.1.7 Reagent grade Acetone.
4.1 This guide provides direction on how to assess spray
6.1.8 Cheesecloth.
trigger hard surface cleaners. This guide describes sample
6.1.9 Vertical rack for drying soiled surfaces.
preparation and evaluation approaches to various aspects of a
6.1.10 Lint free paper towels or absorbent cotton cloths.
spray trigger hard surface cleaner: visual, tactile, fragrance,
performance, and package ergonomics.
7. Procedure
7.1 These procedures are designed for the preparation of
5. Significance and Use
nonporous surfaces to be evaluated by trained assessors or
5.1 The methods outlined in this guide can be used to
consumers for acceptance in a Central Location Test (CLT)
qualitatively and quantitatively evaluate the sensory character-
environment. Not all portions of these procedures may need to
istics and performance of trigger hard surface household
beconductedandwilldependontheobjectiveandscopeofthe
cleaning products for nonporous surfaces.
sensory test(s). Depending on the product’s end-use, select the
soils and surfaces on which this product should be evaluated. It
5.2 The methods are suited for descriptive analysis and may
is suggested consideration be given to testing on multiple
be adaptable for consumer acceptance research.
surfacesormultiplesoils,orboth,tosatisfytheobjectiveofthe
5.3 This guide provides the procedure for the evaluation of
test.
package, application, performance, after-use and fragrance
7.2 Preparation of Surface for Testing—Select the nonpo-
aspects of hard surface cleaners. Depending on the test
rous surface(s) that are appropriate for the particular hard
objectives, all or some of these measures may be used.
surface cleaner to be evaluated. The test surfaces selected
5.4 This guide is designed for use for product research
should be thoroughly cleaned before and between uses. The
guidance in product formulation, new product development,
test surface has to be evaluated prior to use to determine that it
and quality control issues.
is free of manufacturer defects. This will help minimize any
variability from surface to surface. The surface should be
5.5 This guide is a compendium of information or series of
cleaned sequentially as follows:
options that does not recommend a specific course of action.
7.2.1 Wash in warm water with unscented hand dish wash-
This guide is not intended for claim substantiation, as it has not
ing liquid.
been subjected to validation testing.
7.2.2 Rinse with deionized water.
5.6 This guide is for use by individuals who familiarize
7.2.3 Wipe surface dry of any residual water with cheese-
themselves with these procedures and who have previous
cloth. Do not allow water droplets to dry on surface.
experience with sensory evaluations. It is suggested that the
7.2.4 Rinse surface with acetone (reagent grade).
individualshavesomeexperiencewithdevelopingandtraining
7.2.5 Wipe surface dry of any residual acetone with
a descriptive panel or work under the supervision of a sensory
cheesecloth, especially on surface edge.
professional who has.
7.2.6 Exposing the cleaned surfaces to a live stream of air
5.7 This guide might involve hazardous materials. This
should be used to assess the effectiveness of the surface
guide does not claim to address all of the safety problems
cleaningprocess.Thoseareasnotthoroughlycleanwilltakeon
associatedwithitsuse.Itistheresponsibilityoftheuserofthis
a white, highly reflective appearance. In such a case, the entire
guide to establish appropriate safety and healthy practices and
surfacewillbere-cleaned,repeatingtheabovesteps.Soilingof
to determine the applicability of limitations prior to use.
the test surface should not occur until the test surface has been
thoroughly cleaned.
4 5
AvailablefromConsumerSpecialtyProductsAssociation(CSPA),90017thSt., The boldface numbers in parentheses refer to a list of references at the end of
NW, Suite 300, Washington, DC 20006, http://www.cspa.org. this standard.
E2346/E2346M − 15 (2022)
7.2.7 After cleaning, place the clean surfaces on a vertical When appropriate, the user develops/adapts the usage protocol
rack. Be sure the vertical rack does not allow the surfaces to according to the research objective.
touch each other. Take caution to avoid recontaminating the 7.5.1 If the surface is one that is cleaned in a vertical
clean surface. position, then it is recommended that the product usage and
assessment be made in the vertical position. For example, glass
7.3 Application of Soils—Select soils suitable for the hard
is usually seen in a vertical position (windows).Therefore, it is
surface cleaner of interest. Industry standard soil formulations
recommendedthatthesurfacebecleanedverticallyandthatthe
are available through industry organizations such as ASTM,
area behind the glass needs to have a neutral backdrop to
CSPA (Consumer Specialty Products Association), and IKW
preventanydistractionfromassessingtheproductperformance
(Industrieverband Körperpflege-und Waschmittel e.V. – Ger-
on this surface. If the surface is one that is cleaned in a
man industrial union of detergents and cosmetics). It is the
horizontal position, then it is recommended that the product
responsibility of the user of this guide to identify the best
usage and assessment be made in the horizontal position. For
standard soil for their testing application, for example, bath-
example, sheet acrylic is usually seen in a horizontal position
room soil, kitchen soil, etc. The selected soil should be applied
(counter tops). For assessing horizontal surfaces, the Mac Beth
in a reproducible, uniform, and standard manner. To illustrate
Lighting needs to be positioned such that shadows do not fall
the specific nature of the application process, the following
across the surface being evaluated.
instruction steps should be used. The example given is when
7.5.2 The test objective will determine who applies the
the Spangler soil is applied to a glass surface, but is applicable
product. For example, if application is the area being
for other soils and surfaces. Several test methods (CSPA test
evaluated, then the assessors or trained assessors apply the
methods, see 2.3) are available that present the application of
product. If visual is the area being assessed, the sensory
different soils and cleaning products on diverse surfaces and
professionalappliesthetriggerproductsandcleansthesurface.
might provide additional insights in conducting the procedures
This is to ensure consistency across the treated surfaces.
described in this guide.
7.5.3 Assessors and trained assessors wipe the surface with
7.3.1 The Spangler soils are applied using a metered spray
a lint free paper towel or an absorbent cotton cloth. Through
onto the clean surface.
orientations prior to evaluations trained assessors will have
7.3.2 Prime the sprayer before use.
establishedthenumberofwipes,thedirectionofwipes,andthe
7.3.3 Apply a suggested 5.5 g 6 1.0 g of soil to a 30.5 cm
amount of pressure that they need to apply for an application
by 30.5 cm [12 by 12 in.] glass plate. Uniform application of
assessment.
soil is accomplished by spraying two plates, side-by-side in the
7.6 Trained Assessors:
fume hood, at a distance of approximately 20 cm [8 in.], using
7.6.1 Trained descriptive panels should be used when there
four horizontal sweeping sprays, then two vertical sweeping
is the desire to obtain a detailed qualitative and quantitative
sprays for a one-coat application.
product characterization and to determine the differences
7.3.4 Repeat this process for a total of three coats to achieve
between products on sensory product attributes.
the desired soil weight. To ensure a consistent weight of soil
7.6.2 For general information on panel selection criteria and
per plate, it is best to spray soil onto tare glass plates and check
training, consultASTM Manual 13 (2),ASTM Manual 26 (3),
the final weight after complete solvent evaporation. Depending
and ASTM STP 758 (4). Additional assessor considerations
on the soiling compound, the amount of soil applied may vary
should be taken into account and screened out depending upon
from the Spangler soil protocol of three coats.
the test requirements. Some considerations are color blindness,
7.3.5 All plates used in the testing array should be soiled at
olfactory acuity or lack of olfactory sensitivity, allergies, and
thesametime.Itissuggestedthatplatessoiledonthesameday
medical conditions like pregnancy, breast feeding, or chronic
be used as a group.
disease of the assessor.
7.3.6 Warning—The soiling process requires skill and
7.7 Consumers:
judgment. Consideration should be given to the soil loading
7.7.1 Consumer panels should be used when affective and
desired for the test objective (light, regular or heavy soil load).
preference information is needed.
The soil load selected should be realistic and applicable in
7.7.2 Consumers should be recruited among the target
meetin
...

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: E2346/E2346M − 15 E2346/E2346M − 15 (Reapproved 2022)
Standard Guide for
Sensory Evaluation of Household Hard Surface-Cleaning
Products with Emphasis on Spray Triggers
This standard is issued under the fixed designation E2346/E2346M; 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 presents guidelines specific to the sensory evaluation of trigger hard surface cleaners. It covers the procedure for
preparing a nonporous surface with the intent to measure one or all of the various aspects of a trigger product: package, application,
performance, and after-use properties, with focus on visual, tactile, fragrance, performance, and package ergonomics. It is
applicable for use with assessors, highly trained assessors, and consumers.
1.2 This guide for preparing nonporous hard surfaces is intended to focus on surface preparation and evaluation, not on panel
selection, training, or development.
1.3 The reader should be aware that good sensory practices are required when preparing the surfaces, and in developing and
training the assessors.
1.4 The researcher is responsible for identifying the most appropriate test design and using the appropriate statistical tool to
address that experimental design.
1.5 Since this guide’s intended use is to provide direction on the presentation and measurement of the different aspects of spray
trigger hard surface cleaners, this guide may not accurately represent all possible soils and surfaces where spray trigger hard
surface cleaners may be used.
1.6 This guide provides suggested procedures and is not meant to exclude alternate procedures that may be effectively used to
provide the same results.
1.7 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated 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. Values are stated in only SI units when inch-pound units are not
used in practice.
1.8 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 safety, health, and healthenvironmental practices and to determine the
applicability of regulatory requirementslimitations prior to use.
This guide is under the jurisdiction of ASTM Committee E18 on Sensory Evaluationand is the direct responsibility of Subcommittee E18.07 on Personal Care and
Household Evaluation.
Current edition approved Nov. 1, 2015Oct. 1, 2022. Published November 2015October 2022. Originally approved in 2004. Last previous edition approved in 20142015
as E2346/E2346M – 14.E2346/E2346M – 15. DOI: 10.1520/E2346_E2346M-15.10.1520/E2346_E2346M-15R22.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E2346/E2346M − 15 (2022)
1.9 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D4265 Guide for Evaluating Stain Removal Performance in Home Laundering
D5343 Guide for Evaluating Cleaning Performance of Ceramic Tile Cleaners
E253 Terminology Relating to Sensory Evaluation of Materials and Products
2.2 ISO Documents:
ISO 4121 Sensory Analysis—Methodology—Evaluation of Food Products by Methods Using Scales and Categories
ISO 5492 Sensory Analysis—Vocabulary
ISO 5496 Sensory Analysis—Methodology—Initiation and Training of Assessors in the Detection and Recognition of Odors
ISO 6658 Sensory Analysis—Methodology—General Guidance
ISO 8586-1 Sensory Analysis—Methodology—General Guidance for Choosing, Training and Monitoring of Selected Assessors
ISO 11035 Sensory Analysis—Methodology— Identification of Descriptors for Establishing a Sensory Profile
2.3 CSPA Test Methods:
DCC-09 Glass Cleaners
DCC-09A Standard Guide for Evaluating the Filming and Streaking of Glass Cleaners
DCC-12 Guidelines for Screening the Efficacy of Oven Cleaners
DCC-16 Guidelines for Evaluating the Efficacy of Bathroom Cleaners Scrubber Test for Measuring the Removal of Lime Soap
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 nonporous surface—refers to a solid material that cannot be permeated by liquids.
4. Summary of Guide
4.1 This guide provides direction on how to assess spray trigger hard surface cleaners. This guide describes sample preparation
and evaluation approaches to various aspects of a spray trigger hard surface cleaner: visual, tactile, fragrance, performance, and
package ergonomics.
5. Significance and Use
5.1 The methods outlined in this guide can be used to qualitatively and quantitatively evaluate the sensory characteristics and
performance of trigger hard surface household cleaning products for nonporous surfaces.
5.2 The methods are suited for descriptive analysis and may be adaptable for consumer acceptance research.
5.3 This guide provides the procedure for the evaluation of package, application, performance, after-use and fragrance aspects of
hard surface cleaners. Depending on the test objectives, all or some of these measures may be used.
5.4 This guide is designed for use for product research guidance in product formulation, new product development, and quality
control issues.
5.5 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 for claim substantiation, as it has not been subjected to validation testing.
5.6 This guide is for use by individuals who familiarize themselves with these procedures and who have previous experience with
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.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.
Available from Consumer Specialty Products Association (CSPA), 900 17th St., NW, Suite 300, Washington, DC 20006, http://www.cspa.org.
E2346/E2346M − 15 (2022)
sensory evaluations. It is suggested that the individuals have some experience with developing and training a descriptive panel or
work under the supervision of a sensory professional who has.
5.7 This guide might involve hazardous materials. This guide does not claim to address all of the safety problems associated with
its use. It is the responsibility of the user of this guide to establish appropriate safety and healthy practices and to determine the
applicability of limitations prior to use.
6. Equipment
6.1 The following equipment may be used during the preparation or evaluation process:
6.1.1 Lights for a flat horizontal surface require overhead lighting that simulates North Daylight (that is, Mac Beth Lighting). See
ASTM MNL 60 (1).
6.1.2 Lights for a vertical surface may use the Mac Beth portable light box.
6.1.3 Surfaces identified as nonporous are: glass, ceramic, sheet acrylic—also known as Formica®, porcelain, enamel, painted
metal, stainless steel, and chrome. Other non-porous surfaces can be used depending on research objectives.
6.1.4 Test soil (refer to Guides D4265 and D5343 for example soil formulas).
6.1.5 Metered sprayer.
6.1.6 Deionized water.
6.1.7 Reagent grade Acetone.
6.1.8 Cheesecloth.
6.1.9 Vertical rack for drying soiled surfaces.
6.1.10 Lint free paper towels or absorbent cotton cloths.
7. Procedure
7.1 These procedures are designed for the preparation of nonporous surfaces to be evaluated by trained assessors or consumers
for acceptance in a Central Location Test (CLT) environment. Not all portions of these procedures may need to be conducted and
will depend on the objective and scope of the sensory test(s). Depending on the product’s end-use, select the soils and surfaces
on which this product should be evaluated. It is suggested consideration be given to testing on multiple surfaces or multiple soils,
or both, to satisfy the objective of the test.
7.2 Preparation of Surface for Testing—Select the nonporous surface(s) that are appropriate for the particular hard surface cleaner
to be evaluated. The test surfaces selected should be thoroughly cleaned before and between uses. The test surface has to be
evaluated prior to use to determine that it is free of manufacturer defects. This will help minimize any variability from surface to
surface. The surface should be cleaned sequentially as follows:
7.2.1 Wash in warm water with unscented hand dish washing liquid.
7.2.2 Rinse with deionized water.
7.2.3 Wipe surface dry of any residual water with cheesecloth. Do not allow water droplets to dry on surface.
7.2.4 Rinse surface with acetone (reagent grade).
7.2.5 Wipe surface dry of any residual acetone with cheesecloth, especially on surface edge.
The boldface numbers in parentheses refer to a list of references at the end of this standard.
E2346/E2346M − 15 (2022)
7.2.6 Exposing the cleaned surfaces to a live stream of air should be used to assess the effectiveness of the surface cleaning
process. Those areas not thoroughly clean will take on a white, highly reflective appearance. In such a case, the entire surface will
be re-cleaned, repeating the above steps. Soiling of the test surface should not occur until the test surface has been thoroughly
cleaned.
7.2.7 After cleaning, place the clean surfaces on a vertical rack. Be sure the vertical rack does not allow the surfaces to touch each
other. Take caution to avoid recontaminating the clean surface.
7.3 Application of Soils—Select soils suitable for the hard surface cleaner of interest. Industry standard soil formulations are
available through industry organizations such as ASTM, CSPA (Consumer Specialty Products Association), and IKW
(Industrieverband Körperpflege-und Waschmittel e.V. – German industrial union of detergents and cosmetics). It is the
responsibility of the user of this guide to identify the best standard soil for their testing application, for example, bathroom soil,
kitchen soil, etc. The selected soil should be applied in a reproducible, uniform, and standard manner. To illustrate the specific
nature of the application process, the following instruction steps should be used. The example given is when the Spangler soil is
applied to a glass surface, but is applicable for other soils and surfaces. Several test methods (CSPA test methods, see 2.3) are
available that present the application of different soils and cleaning products on diverse surfaces and might provide additional
insights in conducting the procedures described in this guide.
7.3.1 The Spangler soils are applied using a metered spray onto the clean surface.
7.3.2 Prime the sprayer before use.
7.3.3 Apply a suggested 5.55.5 g 6 1.0 g of soil to a 30.530.5 cm by 30.5 cm [12 by 12 in.] glass plate. Uniform application of
soil is accomplished by spraying two plates, side-by-side in the fume hood, at a distance of approximately 20 cm [8 in.], using
four horizontal sweeping sprays, then two vertical sweeping sprays for a one-coat application.
7.3.4 Repeat this process for a total of three coats to achieve the desired soil weight. To ensure a consistent weight of soil per plate,
it is best to spray soil onto tare glass plates and check the final weight after complete solvent evaporation. Depending on the soiling
compound, the amount of soil applied may vary from the Spangler soil protocol of three coats.
7.3.5 All plates used in the testing array should be soiled at the same time. It is suggested that plates soiled on the same day be
used as a group.
7.3.6 Warning—The soiling process requires skill and judgment. Consideration should be given to the soil loading desired for
the test objective (light, regular or heavy soil load). The soil load selected should be realistic and applicable in meeting the purpose
and objective of the test. Practice is encouraged before preparing surfaces for the actual test.
7.4 Aging of the Soils—Soils should be aged for 24 h prior to use to ensure that the soil has cured on the hard surface and has
achieved the desired soil tenacity. An exception to this is when using established soil protocol where a different aging time is
provided. An example is the aging process for Spangler soil: The soiled surface must be aged at 50°C50 °C for 2 h, followed by
cooling to ambient temperature, prior to application of the spray cleaner.
7.5 Cleaning of the Surfaces—It is recommended that the trigger spray product being evaluated be used in accordance with the
product use instructions and with the marketed trigger. When appropriate, the user develops/adapts the usage protocol according
to the research objective.
7.5.1 If the surface is one that is cleaned in a vertical position, then it is recommended that the product usage and assessment be
made in the vertical position. For example, glass is usually seen in a vertical position (windows). Therefore, it is recommended
that the surface be cleaned vertically and that the area behind the glass needs to have a neutral backdrop to prevent any distraction
from assessing the product performance on this surface. If the surface is one that is cleaned in a horizontal position, then it is
recommended that the product usage and assessment be made in the horizontal position. For example, sheet acrylic is usually seen
in a horizontal position (counter tops). For assessing horizontal surfaces, the Mac Beth Lighting needs to be positioned such that
shadows do not fall across the surface being evaluated.
7.5.2 The test objective will determine who applies the product. For example, if application is the area being evaluated, then the
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