EN 17534:2022

Textiles - Physiological effects - Measurement of liquid sweat transport and buffering

This document specifies a test method for measuring liquid sweat management properties of knitted, woven and nonwoven textile fabrics, namely buffering index, sweat transport and sweat uptake.

Textilien - Physiologische Wirkungen - Messung des flüssigen Schweißtransports und der flüssigen Schweißpufferung

Dieses Dokument legt ein Prüfverfahren zur Messung des Schweißmanagements von Maschenwaren, Webwaren und Vliesstoffen fest: den Pufferindex, den Schweißtransport und die Schweißaufnahme.

Textiles - Effets physiologiques - Mesurage du transfert de sueur liquide et de l’effet tampon vis-à-vis de la sueur liquide

Le présent document spécifie une méthode d'essai destinée à mesurer les propriétés de gestion de la sueur liquide des étoffes textiles tricotées, tissées et non tissées, à savoir l'indice de tampon, le transfert de sueur et l'absorption de sueur.

Tekstilije - Fiziološki učinki - Merjenje prenosa tekočega znoja in pufranja

Ta preskusna metoda je namenjena za merjenje lastnosti uravnavanja tekočega znoja pletenih, tkanih in netkanih tekstilnih tkanin, in sicer indeksa pufranja ter prenosa in vsrkavanja znoja.

General Information

• Status: Published
• Publication Date: 08-Nov-2022
• ICS: 59.080.30 - Textile fabrics
• Technical Committee: CEN/TC 248 - Textiles and textile products
• Drafting Committee: CEN/TC 248/WG 28 - Thermoregulation
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 09-Nov-2022
• Due Date: 14-Mar-2022
• Completion Date: 09-Nov-2022
• Ref Project: SIST EN 17534:2023 - Textiles - Physiological effects - Measurement of liquid sweat transport and buffering

Relations

• Revised: CEN/TR 16422:2012 - Classification of thermoregulatory properties
• Effective Date: 04-Apr-2017

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 17534:2023
01-januar-2023
Tekstilije - Fiziološki učinki - Merjenje prenosa tekočega znoja in pufranja

Textiles - Physiological effects - Measurement of liquid sweat transport and buffering

Textilien - Physiologische Wirkungen - Messung des flüssigen Schweißtransports und

der flüssigen Schweißpufferung

Textiles - Effets physiologiques - Mesurage du transfert de sueur liquide et de l’effet

tampon vis-à-vis de la sueur liquide
Ta slovenski standard je istoveten z: EN 17534:2022
ICS:
59.080.30 Tkanine Textile fabrics
SIST EN 17534:2023 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 17534:2023
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SIST EN 17534:2023
EN 17534
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 59.080.30
English Version
Textiles - Physiological effects - Measurement of liquid
sweat transport and buffering

Textiles - Effets physiologiques - Mesurage du transfert Textilien - Physiologische Wirkungen - Messung des

de sueur liquide et de l'effet tampon vis-à-vis de la flüssigen Schweißtransports und der flüssigen

sueur liquide Schweißpufferung
This European Standard was approved by CEN on 26 September 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17534:2022 E

worldwide for CEN national Members.
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SIST EN 17534:2023
EN 17534:2022 (E)
Contents Page

European foreword ............................................................................................................................................ 3

Introduction .......................................................................................................................................................... 4

1 Scope .......................................................................................................................................................... 5

2 Normative references .......................................................................................................................... 5

3 Terms and definitions ......................................................................................................................... 5

4 Reagents ................................................................................................................................................... 6

5 Test accessories ..................................................................................................................................... 6

5.1 Thin foil .................................................................................................................................................... 6

5.2 Polyester woven fabric ....................................................................................................................... 6

5.3 Frame (for method B) .......................................................................................................................... 6

5.4 Specimen carrier ................................................................................................................................... 6

6 Measurement and test methods ...................................................................................................... 7

6.1 General...................................................................................................................................................... 7

6.2 Method A .................................................................................................................................................. 8

6.2.1 Principle ................................................................................................................................................... 8

6.2.2 Test specimens ...................................................................................................................................... 9

6.2.3 Test procedure ....................................................................................................................................... 9

6.2.4 Evaluation of test results .................................................................................................................. 10

6.2.5 Physiological assessment of the textile material .................................................................... 11

6.2.6 Calibration of test apparatus .......................................................................................................... 11

6.2.7 Precision of results ............................................................................................................................. 11

6.2.8 Test report ............................................................................................................................................. 12

6.3 Method B (Modification of Method A) ......................................................................................... 12

6.3.1 Principle of test .................................................................................................................................... 12

6.3.2 Test procedure ..................................................................................................................................... 13

6.3.3 Evaluation of test results .................................................................................................................. 13

Annex A (informative) Specimen carrier ................................................................................................ 14

Bibliography ....................................................................................................................................................... 19

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SIST EN 17534:2023
EN 17534:2022 (E)
European foreword

This document (EN 17534:2022) has been prepared by Technical Committee CEN/TC 248 “Textiles and

textile products”, the secretariat of which is held by BSI.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by May 2023, and conflicting national standards shall be

withdrawn at the latest by May 2023.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,

Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,

Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North

Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United

Kingdom.
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SIST EN 17534:2023
EN 17534:2022 (E)
Introduction

For the assessment of the physiological properties of textiles worn next to the skin, not only their

thermophysiological properties in stationary conditions (thermal and water vapour resistance) are

important, which can be measured according to EN ISO 11092 with the sweating guarded-hotplate (Skin

Model), but also their capacity to buffer in stationary sweat pulses and to transport liquid sweat,

occurring in the practical use of textiles and clothing.

With liquid sweat appearing on the wearer's skin, the textiles take it up and transport it into the next

textile layers or into the environmental air. This so-called buffering capacity and transport of liquid water

(sweat) of a textile is measured quantitatively with the sweating guarded-hotplate, slightly modified from

the design and procedures described in the above standard. A textile is judged to perform better, the more

efficient the transport of sweat from the skin is, and the less liquid sweat remains on the skin.

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SIST EN 17534:2023
EN 17534:2022 (E)
1 Scope

This document specifies a test method for measuring liquid sweat management properties of knitted,

woven and nonwoven textile fabrics, namely buffering index, sweat transport and sweat uptake.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696)

EN ISO 11092, Textiles — Physiological effects — Measurement of thermal and water-vapour resistance

under steady-state conditions (sweating guarded-hotplate test) (ISO 11092)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
uptake
buffering

effect measured by the quantity of liquid water remaining in the textile material in grams during and after

a period of time in contact with water
3.2
sweat transport

amount of liquid water (sweat) in grams taken up by 1 m of the textile material and within 1 h

transported into ambient air with specific temperature and relative humidity
3.3
liquid sweat management

combining of the uptake or buffering of the sweat from the skin, on one hand, and of the transport of the

sweat from the skin to the ambience, on the other hand
3.4
moisture permeability

effect measured by the amount of liquid water in grams taken up by 1 m of the textile material and within

1 h transported into ambient air with a water vapour pressure gradient of 1 hPa between the two sides

of the textile material
3.5
sweat uptake

effect measured by the portion of liquid water remaining in the textile material in grams after 15 min of

contact with water
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SIST EN 17534:2023
EN 17534:2022 (E)
3.6
buffering index

ratio of the sum of liquid water transported through the textile material (G ) and remaining in the textile

material (G ) in grams after 15 min of contact with water, to the total amount of water injected into the

textile material (G ) in grams
4 Reagents
Grade 3 water compliant with EN ISO 3696.
5 Test accessories
5.1 Thin foil

A thin foil sized 25 cm × 25 cm which is water and water vapour impermeable. A suggested material for

the foil is PET (polyethylene terephthalate) with a thickness of 0,1 mm. The thin foil shall present a good

thermal stability and a good planarity to enable close contact with the plate of the skin-model.

NOTE The foil prevents the water from being wicked into the measuring unit for the duration of the test.

5.2 Polyester woven fabric
2 1)

A polyester woven fabric with a mass of (100 ± 3) g/m and a size of 20 cm × 20 cm .

NOTE This fabric simulates distribution of sweat on skin.

Water absorbency of this fabric can be checked using the method described in Annex A of

ISO 17617:2014 (drop test).

When soiling is visible, this polyester woven fabric shall be cleaned. The cleaning procedure is as follows:

the polyester woven fabric is rinsed in distilled water at room temperature until the soiling has been

removed. Then the fabric is air-dried at room temperature.
5.3 Frame (for method B)

A frame made of material with a low thermal conductance, for example synthetic resin.

Dimensions of the frame are:
— outer size: 300 mm × 300 mm;
— inner size: 230 mm × 230 mm;
— thickness: (2 ± 0,1) mm.
5.4 Specimen carrier
A specimen carrier, see Figure 1.

A suitable reference for the polyester woven fabric is 'Vektron 4003' produced by Klopman International, Berliner Strasse 101, D-40880

Ratingen, Germany. This information is given for the convenience of users of this document and does not constitute an endorsement by

CEN/TC248 of the product named. Equivalent products may be used if they can be shown to lead to the same results.

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SIST EN 17534:2023
EN 17534:2022 (E)
Key
1 test specimen
2 spacers
3 clips (closed position)
4 mechanism to open and close the clips
5 lid
6 gasket
Figure 1 — Specimen carrier in reverse position

The lid shall be large enough to be laid down on the frame and cover the sample without touching it.

Spacer height shall be 3 mm.
The use of the specimen carrier is illustrated in Annex A, Figures A.1 to A.8.
6 Measurement and test methods
6.1 General

Two methods are described. Method A implies a technical modification by adding a gas meter to the

sweating guarded-hotplate. If it is not possible to modify the equipment, method B can be used on any

sweating guarded-hotplate compliant with EN ISO 11092.
It has been shown that both methods provide similar results.
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SIST EN 17534:2023
EN 17534:2022 (E)
6.2 Method A
6.2.1 Principle

The buffering capacity and transport of liquid sweat of a textile material is measured with the sweating

guarded-hotplate, specified in EN ISO 11092, with as additional components a gas meter and two

temperature sensors at the inlet and outlet of the gas meter (Figure 2).
Key
1 gas meter 7 polyester woven fabric
2 drying column 8 water and water vapour impermeable foil
3 climatic cabinet (35 °C, 30 % RH) 9 measuring unit
4 air pump G0 water injected in the polyester woven fabric
5 test specimen G water transported through the test specimen
6 syringe G sweat uptake
Figure 2 — Principle of apparatus

To perform the test the sweating guarded-hotplate's measuring unit kept at 35 °C is covered with the thin

foil. On top of the foil the
...

SLOVENSKI STANDARD
oSIST prEN 17534:2020
01-julij-2020
Tekstilije - Fiziološki učinki - Merjenje prenosa tekočega znoja in pufranja

Textiles – Physiological effects – Measurement of liquid sweat transport and buffering

Textilien - Physiologische Wirkungen - Messung des flüssigen Schweißtransports und

der flüssigen Schweißpufferung
Ta slovenski standard je istoveten z: prEN 17534
ICS:
59.080.30 Tkanine Textile fabrics
oSIST prEN 17534:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 17534:2020
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oSIST prEN 17534:2020
DRAFT
EUROPEAN STANDARD
prEN 17534
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 59.080.30
English Version
Textiles - Physiological effects - Measurement of liquid
sweat transport and buffering
Textilien - Physiologische Wirkungen - Messung des
flüssigen Schweißtransports und der flüssigen
Schweißpufferung

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 248.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations

which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17534:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 17534:2020
prEN 17534:2020 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Reagents ............................................................................................................................................................. 6

5 Test accessories ............................................................................................................................................... 6

5.1 Thin foil .............................................................................................................................................................. 6

5.2 Polyester woven fabric ................................................................................................................................. 6

5.3 Frame (for method B) .................................................................................................................................... 6

5.4 Specimen carrier ............................................................................................................................................. 6

6 Measurement and test methods ................................................................................................................ 7

6.1 General................................................................................................................................................................ 7

6.2 Method A ............................................................................................................................................................ 8

6.2.1 Principle ............................................................................................................................................................. 8

6.2.2 Test specimens ................................................................................................................................................ 9

6.2.3 Test procedure ................................................................................................................................................. 9

6.2.4 Evaluation of test results .............................................................................................................................. 9

6.2.5 Physiological assessment of the textile material .............................................................................. 11

6.2.6 Calibration of test apparatus .................................................................................................................... 11

6.2.7 Precision of results ....................................................................................................................................... 11

6.2.8 Test report ....................................................................................................................................................... 12

6.3 Method B (Modification of Method A) ................................................................................................... 12

6.3.1 Principle of test .............................................................................................................................................. 12

6.3.2 Test procedure ............................................................................................................................................... 13

6.3.3 Evaluation of test results ............................................................................................................................ 13

Annex A (informative) Specimen carrier .......................................................................................................... 14

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oSIST prEN 17534:2020
prEN 17534:2020 (E)
European foreword

This document (prEN 17534:2020) has been prepared by Technical Committee CEN/TC 248 “Textiles

and Textile Products”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
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oSIST prEN 17534:2020
prEN 17534:2020 (E)
Introduction

For the assessment of the physiological properties of textiles worn next to the skin, not only their

stationary thermophysiological properties (thermal and water vapour resistance) are important, which

can be measured according to EN ISO 11092 with the sweating guarded-hotplate (Skin Model), but also

their capacity to buffer in stationary sweat pulses and to transport liquid sweat, occurring in the

practical use of textiles and clothing.

With liquid sweat appearing on the wearer's skin, the textiles takes it up and transport it into the next

textile layers or into the environmental air. This so-called buffering capacity and transport of liquid

water (sweat) of a textile is measured quantitatively with the sweating guarded-hotplate, slightly

modified from the design and procedures described in the above standards. A textile is judged to

perform better, the more complete the transport of sweat from the skin is effected, and the less liquid

sweat remains on the skin.
---------------------- Page: 6 ----------------------
oSIST prEN 17534:2020
prEN 17534:2020 (E)
1 Scope

This test method is intended for measuring liquid sweat management properties of knitted, woven and

nonwoven textile fabrics, namely buffering index, sweat transport and sweat uptake.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696)

EN ISO 11092, Textiles — Physiological effects — Measurement of thermal and water-vapour resistance

under steady-state conditions (sweating guarded-hotplate test) (ISO 11092)
ISO 17617:2014, Textiles — Determination of moisture drying rate
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

IEC Electropedia: available at https://www.electropedia.org/
ISO Online browsing platform: available at https://www.iso.org/obp
3.1
uptake or buffering

liquid water remaining in the textile material in grams during and after a period of time in contact with

water
3.2
sweat transport, F

amount of liquid water (sweat) in grams taken up by 1 m of the textile material and within 1 h

transported into ambient air with specific temperature and relative humidity
3.3
liquid sweat management

consists, on one hand, of the uptake or buffering of the sweat from the skin and, on the other hand, of

the transport of the sweat from the skin to the ambience

Note 1 to entry: for sweat from the skin, see 3.1 and for sweat from the skin to the ambiance, see 3.2.

3.4
moisture permeability, F

amount of liquid water in grams taken up by 1 m of the textile material and within 1 h transported into

ambient air with a water vapour pressure gradient of 1 hPa between the two sides of the textile

material
3.5
sweat uptake, G

portion of liquid water remaining in the textile material in grams after 15 min of contact with water

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oSIST prEN 17534:2020
prEN 17534:2020 (E)
3.6
buffering index, K

portion of the sum of liquid water transported through the textile material (G ) and remaining in the

textile material (G ) in grams after 15 min of contact with water related to the total amount of water

offered to the textile material (G ) in grams
4 Reagents
Grade 3 water compliant with EN ISO 3696.
5 Test accessories
5.1 Thin foil

A thin foil sized 25 cm x 25 cm which is water and water vapour impermeable. A suggested material for

the foil is PET (Polyethylene terephthalate) with a thickness of 0,1 mm. The thin foil shall present a

good thermal stability and a good planarity to enable close contact with the plate of the skin-model.

Note: the foil prevents the water from being wicked into the measuring unit for the duration of the test.

5.2 Polyester woven fabric

A polyester woven fabric with hydrophobic surface characteristics, a mass of (100 ± 3) g/m and a size

of 20 cm x 20 cm .
Note: this fabric simulates distribution of sweat on skin.

Water absorbency of this fabric can be checked using the method described in Annex A of

ISO 17617:2014 (drop test).

When soiling is visible, this polyester woven fabric shall be cleaned. The cleaning procedure is as

follows: the polyester woven-fabric is rinsed in distilled water at room temperature until the soiling has

been removed. Then the fabric is air-dried at room temperature.
5.3 Frame (for method B)

A frame made of material with a low thermal conductance, for example synthetic resin.

Dimensions of the frame are:
— outer size: 300 × 300 mm ;
— inner size: 230 × 230 mm ;
— thickness: (2 ± 0,1) mm.
5.4 Specimen carrier
A specimen carrier, see Figure 1.

A suitable reference for the PES-woven fabric is 'Vektron 4003' produced by Klopman International, Berliner Strasse 101, D-40880

Ratingen, Germany. This information is given for the convenience of users of this document and does not constitute an endorsement by

CEN/TC248 of the product named. Equivalent products may be used if they can be shown to lead to the same results.

---------------------- Page: 8 ----------------------
oSIST prEN 17534:2020
prEN 17534:2020 (E)
Key
1 specimen
2 spacers
3 clips (closed position)
4 mechanism to open and close the clips
5 lid
6 gasket
Figure 1 — Specimen carrier in reverse position

The lid shall be large enough to lay on the frame and cover the sample without touching it. Spacer

height shall be 3 mm.
The use of the specimen carrier is illustrated in Annex A.
6 Measurement and test methods
6.1 General

Two methods are described. Method A implies a technical modification by adding a gas meter to the

sweating guarded hotplate. If it is not possible to modify the equipment, method B can be used on any

sweating guarded hotplate compliant with EN ISO 11092
It has been shown that both methods provide similar results.
---------------------- Page: 9 ----------------------
oSIST prEN 17534:2020
prEN 17534:2020 (E)
6.2 Method A
6.2.1 Principle

The buffering capacity and transport of liquid sweat of a textile material is measured with the sweating

guarded-hotplate, specified in EN ISO 11092, with as additional components a gas meter and two

temperature sensors at the inlet and outlet of the gas meter (Figure 2).
Key
1 gas meter 7 hydrophobic polyester fabric
2 drying column 8 water and water vapour impermeable foil
3 climatic cabinet (35 °C, 30 % r.h.) 9 measuring unit
4 air pump G0 water injected in the polyester fabric
5 specimen G water transported through the specimen
6 syringe G sweat uptake
Figure 2 — Principle of apparatus
To perform the test the sweating guarded-ho
...