ASTM E3025-22

Standard Guide for Tiered Approach to Detection and Characterization of Silver Nanomaterials in Textiles

SIGNIFICANCE AND USE
4.1 Natural and manufactured textiles fibers can be treated with chemicals to provide enhanced antimicrobial (fungi, bacteria, viruses) properties. In some cases, silver nanomaterials may be used to treat textile fibers (1).6 Silver nanomaterials are used to treat a wide array of consumer textile products, including, but not limited to, various clothing; primary garments (shirts, pants), outer wear (gloves, jackets), inner wear (socks and underwear), children’s clothing (sleepwear); children’s plush toys; bath towels and bedding (sheets, pillows); and medical devices (for example, wound dressings and face masks) (2).  
4.2 There are many different chemical and physical forms of silver that are used to treat textiles and an overview of this topic is provided in Appendix X1.  
4.3 Several applicable techniques for detection and characterization of silver are listed and described in Appendix X2 so that users of this guide may understand the suitability of a particular technique for their specific textile and silver measurement need.  
4.4 There are many different reasons to assay for silver nanomaterials in a textile at any point in a product’s life cycle. For example, a producer may want to verify that a textile meets their internal quality control specifications or a regulator may want to understand the properties of silver nanomaterials used to make a consumer textile product under their jurisdiction or what quantity of silver nanomaterial is potentially available for release from the treated textile during the washing process or during product use. Regardless of the specific reason, a structured approach to detect and characterize silver nanomaterials present in a textile will facilitate measurements and data comparison. Detection and characterterization of silver in textiles is one component of an overall risk assessment.  
4.5 The approach presented in this guide (see Fig. 1) consists of three sequential tiers: obtain a textile sample (Section 7), detection o...
SCOPE
1.1 This guide covers the use of a tiered approach for detection and characterization of silver nanomaterials in consumer textile products, which can include some medical devices (for example, wound dressings or face masks), made of any combination of natural or manufactured fibers.  
1.2 This guide covers, but is not limited to, fabrics and parts (for example, thread, batting) used during the manufacture of textiles and production of consumer textile products that may contain silver-based nanomaterials. It does not apply to analysis of silver nanomaterials in non-consumer textile product matrices nor does it cover thin film silver coatings with only one dimension in the nanoscale.  
1.3 This guide is intended to serve as a resource for manufacturers, producers, analysts, policymakers, regulators, and others with an interest in textiles.  
1.4 This guide is presented in the specific context of measurement of silver nanomaterials; however, the structured approach described herein is applicable to other nanomaterials in consumer textile products, including some medical devices.  
1.5 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.6 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.  
1.7 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.

General Information

• Status: Published
• Publication Date: 14-Nov-2022
• ICS: 07.120 - Nanotechnologies
• ICS: 59.080.01 - Textiles in general
• Technical Committee: E56 - Nanotechnology
• Drafting Committee: E56.06 - Nano-Enabled Consumer Products

Standards Content (Sample)

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.
Designation: E3025 − 22
Standard Guide for
Tiered Approach to Detection and Characterization of Silver
1
Nanomaterials in Textiles
This standard is issued under the fixed designation E3025; 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 2. Referenced Documents
2
1.1 This guide covers the use of a tiered approach for 2.1 ASTM Standards:
detection and characterization of silver nanomaterials in con- D123 Terminology Relating to Textiles
sumer textile products, which can include some medical D6413 Test Method for Flame Resistance of Textiles (Ver-
devices(forexample,wounddressingsorfacemasks),madeof tical Test)
3
any combination of natural or manufactured fibers.
2.2 AATCC Standards:
AATCC 135 Dimensional Changes of Fabrics after Home
1.2 This guide covers, but is not limited to, fabrics and parts
Laundering
(for example, thread, batting) used during the manufacture of
4
textiles and production of consumer textile products that may
2.3 ISO Standards:
contain silver-based nanomaterials. It does not apply to analy-
ISO 10136-1 Glass and Glassware—Analysis of Extract
sis of silver nanomaterials in non-consumer textile product
Solutions—Part 1: Determination of Silicon Dioxide by
matrices nor does it cover thin film silver coatings with only
Molecular Absorption Spectrometry
one dimension in the nanoscale.
ISO 16140 Microbiology of Food and Animal Feeding
Stuffs—ProtocolfortheValidationofAlternativeMethods
1.3 This guide is intended to serve as a resource for
ISO/IEC Guide 99 International Vocabulary of Metrology—
manufacturers, producers, analysts, policymakers, regulators,
Basic and General Concepts andAssociated Terms (VIM)
and others with an interest in textiles.
ISO/TR 18196 Nanotechnologies—Measurement Technique
1.4 This guide is presented in the specific context of
Matrix for the Characterization of Nano-Objects
measurement of silver nanomaterials; however, the structured
ISO/TS 80004-1 Nanotechnologies—Vocabulary—Part 1:
approach described herein is applicable to other nanomaterials
Core Terms
in consumer textile products, including some medical devices.
5
2.4 U.S. Code of Federal Regulations:
1.5 Units—The values stated in SI units are to be regarded
16 CFR Parts 1615 and 1616 Standards for the Flammability
as standard. No other units of measurement are included in this
of Children’s Sleepwear
standard.
3. Terminology
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1 Definitions—For additional definitions related to
responsibility of the user of this standard to establish appro-
textiles, see Terminology D123; for additional definitions
priate safety, health, and environmental practices and deter-
related to nanotechnology, see ISO/TS 80004-1; and for
mine the applicability of regulatory limitations prior to use.
additional definitions related to measurements, see ISO/IEC
1.7 This international standard was developed in accor-
Guide 99.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
mendations issued by the World Trade Organization Technical
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
Barriers to Trade (TBT) Committee.
the ASTM website.
3
Available from American Association of Textile Chemists and Colorists
(AATCC), P.O. Box 12215, Research Triangle Park, NC 27709-2215, http://
1
This guide is under the jurisdiction of ASTM Committee E56 on Nanotech- www.aatcc.org.
4
nology and is the direct responsibility of Subcommittee E56.06 on Nano-Enabled Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Consumer Products. 4th Floor, New York, NY 10036, http://www.ansi.org.
5
Current edition approved Nov. 15, 2022. Published December 2022. Originally Available from U.S. Government Printing Office, Superintendent of
approved in 2016. Last previous edition approved in 2016 as E3025 – 16. DOI: Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
10.1520/E3025-22. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1
...

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: E3025 − 16 E3025 − 22
Standard Guide for
Tiered Approach to Detection and Characterization of Silver
1
Nanomaterials in Textiles
This standard is issued under the fixed designation E3025; 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 the use of a tiered approach for detection and characterization of silver nanomaterials in consumer textile
products products, which can include some medical devices (for example, wound dressings or face masks), made of any
combination of natural or manufactured fibers.
1.2 This guide covers, but is not limited to, fabrics and parts (for example, thread, batting) used during the manufacture of textiles
and production of consumer textile products that may contain silver-based nanomaterials. It does not apply to analysis of silver
nanomaterials in non-consumer textile product matrices nor does it cover thin film silver coatings with only one dimension in the
nanoscale.
1.3 This guide is intended to serve as a resource for manufacturers, producers, analysts, policymakers, regulators, and others with
an interest in textiles.
1.4 This guide is presented in the specific context of measurement of silver nanomaterials; however, the structured approach
described herein is applicable to other nanomaterials used to treat consumer textile products. in consumer textile products,
including some medical devices.
1.5 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.6 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 determine the
applicability of regulatory limitations prior to use.
1.7 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
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
1
This guide is under the jurisdiction of ASTM Committee E56 on Nanotechnology and is the direct responsibility of Subcommittee E56.06 on Nano-Enabled Consumer
Products.
Current edition approved May 1, 2016Nov. 15, 2022. Published May 2016December 2022. Originally approved in 2016. Last previous edition approved in 2016 as
E3025 – 16. DOI: 10.1520/E3025-16.10.1520/E3025-22.
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 ----------------------
E3025 − 22
D6413 Test Method for Flame Resistance of Textiles (Vertical Test)
3
2.2 AATCC Standards:
AATCC 135 Dimensional Changes of Fabrics after Home Laundering
4
2.3 ISO Standards:
ISO 10136-1 Glass and Glassware—Analysis of Extract Solutions—Part 1: Determination of Silicon Dioxide by Molecular
Absorption Spectrometry
ISO 16140 Microbiology of Food and Animal Feeding Stuffs—Protocol for the Validation of Alternative Methods
ISO/IEC Guide 99 International Vocabulary of Metrology—Basic and General Concepts and Associated Terms (VIM)
ISO/DTRISO/TR 18196 Nanotechnologies—Measurement Technique Matrix for the Characterization of Nano-Objects
ISO/TS 80004-1 Nanotechnologies—Vocabulary—Part 1: Core Terms
5
2.4 U.S. Code of Federal Regulations:
16 CFR Parts 1615 and 1616 Standards for the Flammability of Children’s Sleepwear
3. Terminology
3.1 Definitions—For additional definitions related to textiles, see Terminology D123; for additional definitions related to
nanotechnology, see ISO/TS 80004-1; and for additional definitions related to measurements, see ISO/IEC Guide 99.
3.1.1 analyte, n—element or constituent to be determined. ISO 10136-1
3.1.2 consumer textile product, n—textile product intended to satisfy human wants and needs. D123
3.1.3 ma
...