Workplace atmospheres - Short term detector tube measurement systems - Requirements and test methods (ISO 17621:2015)

ISO 17621:2015 specifies requirements and test methods under prescribed laboratory conditions for length-of-stain detector tubes and their associated pump (detector tube measurement system) used for short-term measurements of the concentration of specified chemical agents in workplace air.
ISO 17621:2015 is not applicable to measurements made to demonstrate compliance with long-term limit values to personal exposure with a reference period of more than 15 min.

Arbeitsplatzatmosphäre - Kurzzeitprüfröhrchen-Messeinrichtungen - Anforderungen und Prüfverfahren (ISO 17621:2015)

Air des lieux de travail - Systèmes de mesurage par tube détecteur à court terme - Exigences et méthodes d'essai (ISO 17621:2015)

ISO 17621:2015 spécifie les exigences et les méthodes d'essai, dans des conditions de laboratoire prescrites, applicables aux tubes détecteurs à longueur de coloration et à leur pompe associée (système de mesurage par tube détecteur) utilisés pour les mesurages à court terme de la concentration d'agents chimiques spécifiés dans l'air des lieux de travail.
ISO 17621:2015 ne s'applique pas aux mesurages effectués pour démontrer la conformité à des valeurs limites d'exposition à long terme du personnel, avec une période de référence supérieure à 15 min.

Zrak na delovnem mestu - Sistemi za kratkotrajno merjenje z detekcijskimi cevkami - Zahteve in preskusne metode (ISO 17621:2015)

Ta evropski standard določa zahteve in preskusne metode v skladu s predpisanimi laboratorijskimi pogoji za detekcijske cevke (na osnovi dolžine madeža) in z njimi povezane črpalke (merilni sistem z detekcijskimi cevkami), ki se uporabljajo za kratkotrajne meritve koncentracije določenih kemikalij v zraku na delovnem mestu.

General Information

Status
Published
Publication Date
29-Sep-2015
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
30-Sep-2015
Completion Date
30-Sep-2015

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SLOVENSKI STANDARD
SIST EN ISO 17621:2015
01-december-2015
1DGRPHãþD
SIST EN 1231:1999
Zrak na delovnem mestu - Sistemi za kratkotrajno merjenje z detekcijskimi
cevkami - Zahteve in preskusne metode (ISO 17621:2015)
Workplace atmospheres - Short term detector tube measurement systems -
Requirements and test methods (ISO 17621:2015)

Arbeitsplatzatmosphäre - Kurzzeitprüfröhrchen-Messeinrichtungen - Anforderungen und

Prüfverfahren (ISO 17621:2015)

Atmosphères des lieux de travail - Systèmes de mesurage par tube détecteur à court

terme - Exigences et méthodes d'essai (ISO 17621:2015)
Ta slovenski standard je istoveten z: EN ISO 17621:2015
ICS:
13.040.30 Kakovost zraka na delovnem Workplace atmospheres
mestu
SIST EN ISO 17621:2015 en,fr,de

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

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SIST EN ISO 17621:2015
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SIST EN ISO 17621:2015
EN ISO 17621
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2015
EUROPÄISCHE NORM
ICS 13.040.30 Supersedes EN 1231:1996
English Version
Workplace atmospheres - Short term detector tube
measurement systems - Requirements and test methods
(ISO 17621:2015)

Air des lieux de travail - Systèmes de mesurage par Arbeitsplatzatmosphäre - Kurzzeitprüfröhrchen-

tube détecteur à court terme - Exigences et méthodes Messeinrichtungen - Anforderungen und Prüfverfahren

d'essai (ISO 17621:2015) (ISO 17621:2015)
This European Standard was approved by CEN on 7 May 2015.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17621:2015 E

worldwide for CEN national Members.
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SIST EN ISO 17621:2015
EN ISO 17621:2015 (E)
Contents Page

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

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SIST EN ISO 17621:2015
EN ISO 17621:2015 (E)
European foreword

This document (EN ISO 17621:2015) has been prepared by Technical Committee ISO/TC 146 "Air

quality" in collaboration with Technical Committee CEN/TC 137 “Assessment of workplace exposure to

chemical and biological agents” the secretariat of which is held by DIN.

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 March 2016, and conflicting national standards shall

be withdrawn at the latest by March 2016.

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

patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent

rights.
This document supersedes EN 1231:1996.

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

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

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

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

Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 17621:2015 has been approved by CEN as EN ISO 17621:2015 without any modification.

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SIST EN ISO 17621:2015
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SIST EN ISO 17621:2015
INTERNATIONAL ISO
STANDARD 17621
First edition
2015-09-15
Workplace atmospheres — Short term
detector tube measurement systems
— Requirements and test methods
Air des lieux de travail — Systèmes de mesurage par tube détecteur à
court terme — Exigences et méthodes d’essai
Reference number
ISO 17621:2015(E)
ISO 2015
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SIST EN ISO 17621:2015
ISO 17621:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
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SIST EN ISO 17621:2015
ISO 17621:2015(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Requirements .......................................................................................................................................................................................................... 3

4.1 General ........................................................................................................................................................................................................... 3

4.2 Detector tubes ......................................................................................................................................................................................... 3

4.2.1 Specified measuring range ...................................................................................................................................... 3

4.2.2 Scale ............................................................................................................................................................................................ 3

4.2.3 Evaluation of the stain................................................................................................................................................. 4

4.2.4 Shelf life ................................................................................................................................................................................... 4

4.2.5 Mechanical strength ...................................................................................................................................................... 4

4.2.6 Transportation temperature stability ........................................................................................................... 4

4.2.7 Packing of the detector tubes .................. .............................................................................................................. 4

4.2.8 Interferences ....................................................................................................................................................................... 4

4.2.9 Overloading .......................................................................................................................................................................... 4

4.2.10 Environmental influences ........................................................................................................................................ 4

4.2.11 Instruction for use for detector tubes ........................................................................................................... 5

4.3 Detector tube pump ............................................................................................................................................................................ 5

4.3.1 General...................................................................................................................................................................................... 5

4.3.2 Stroke volume ..................................................................................................................................................................... 5

4.3.3 Leakage .................................................................................................................................................................................... 5

4.3.4 Mechanical strength ...................................................................................................................................................... 5

4.3.5 Mechanical durability .................................................................................................................................................. 5

4.3.6 Explosion hazard ............................................................................................................................................................. 6

4.3.7 Instructions for use for detector tube pumps ......................................................................................... 6

5 Test conditions ....................................................................................................................................................................................................... 6

5.1 General ........................................................................................................................................................................................................... 6

5.2 Reagents........................................................................................................................................................................................................ 6

5.3 Apparatus .................................................................................................................................................................................................... 6

5.4 Independent method ......................................................................................................................................................................... 6

5.5 Generation of test gas mixtures ................................................................................................................................................ 6

5.6 Test conditions for detector tubes ......................................................................................................................................... 7

5.7 Test conditions for detector tube pumps ......................................................................................................................... 7

6 Test methods ............................................................................................................................................................................................................. 7

6.1 Detector tubes ......................................................................................................................................................................................... 7

6.1.1 Visual checks ....................................................................................................................................................................... 7

6.1.2 Test procedures................................................................................................................................................................. 8

6.1.3 Mechanical strength ...................................................................................................................................................... 9

6.2 Detector tube pumps ......................................................................................................................................................................10

6.2.1 Stroke volume ..................................................................................................................................................................10

6.2.2 Leakage .................................................................................................................................................................................11

6.2.3 Mechanical strength ...................................................................................................................................................11

6.2.4 Mechanical durability ...............................................................................................................................................11

6.2.5 Explosion hazard (electrically driven detector tube pumps only) ....................................11

6.2.6 Instructions for use.....................................................................................................................................................11

7 Uncertainty of measurement ................................................................................................................................................................11

7.1 Potential sources of uncertainty ...........................................................................................................................................11

7.2 Estimation of the uncertainty components .................................................................................................................12

7.2.1 Combined stain component ................................................................................................................................12

7.2.2 Pump-stroke volume .................................................................................................................................................14

© ISO 2015 – All rights reserved iii
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SIST EN ISO 17621:2015
ISO 17621:2015(E)

7.2.3 Effect of temperature ................................................................................................................................................14

7.2.4 Effect of relative humidity ....................................................................................................................................15

7.2.5 Test gas concentration used for evaluation ...........................................................................................15

7.2.6 Stain-length reading...................................................................................................................................................16

7.2.7 Analytical phenomena .............................................................................................................................................16

7.2.8 Atmospheric pressure ..............................................................................................................................................16

7.2.9 Diffusive leakage into detector tube ............................................................................................................16

7.2.10 Non-constant sampling flow ...............................................................................................................................17

7.3 Combined standard uncertainty ...........................................................................................................................................17

7.4 Expanded uncertainty ...................................................................................................................................................................18

8 Test report ................................................................................................................................................................................................................18

8.1 Detector tubes ......................................................................................................................................................................................18

8.2 Detector tube pumps ......................................................................................................................................................................18

9 Marking .......................................................................................................................................................................................................................19

9.1 Boxes .............................................................................................................................................................................................................19

9.2 Detector tubes ......................................................................................................................................................................................19

9.3 Detector tube pumps ......................................................................................................................................................................19

Annex A (normative) Test sequence ..................................................................................................................................................................20

Annex B (normative) List of test instruments ..........................................................................................................................................21

Annex C (informative) Example for calculation of expanded uncertainty .................................................................22

Bibliography .............................................................................................................................................................................................................................25

iv © ISO 2015 – All rights reserved
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SIST EN ISO 17621:2015
ISO 17621:2015(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

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

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical

Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 146, Air quality, Subcommittee SC 2,

Workplaces atmospheres.
© ISO 2015 – All rights reserved v
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SIST EN ISO 17621:2015
ISO 17621:2015(E)
Introduction

Many short-term detector tube measurement systems consist of a (length-of-stain) detector tube

connected to an associated detector tube pump. When workplace air containing a particular

chemical agent is drawn through the detector tube, a colour change takes place corresponding to the

concentration.

Such short-term detector tube measurement systems have many applications. This International

Standard refers to detector tubes used for workplace air monitoring. These detector tubes can be used

for measurement tasks such as follows:
— determination of the presence or absence of an analyte;
— finding the approximate range of concentration;
— determination of the efficiency of control measurements;
— determination of emission sources and emission changes in time;

— determination of compliance with ceiling or short-term limit values, as long as the device covers the

reference time period and the precision requirements for the measurement.

To cover the possible range of concentration that can be encountered in the workplace, a combination of

two or more measurements using detector tubes with restricted but complementary and overlapping

measuring ranges can also be used.

This International Standard will enable the manufacturers, test houses, certification bodies, and the

users to adopt a consistent approach to the assessment of performance of short-term detector tube

measurement systems.
vi © ISO 2015 – All rights reserved
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SIST EN ISO 17621:2015
INTERNATIONAL STANDARD ISO 17621:2015(E)
Workplace atmospheres — Short term detector tube
measurement systems — Requirements and test methods
1 Scope

This International Standard specifies requirements and test methods under prescribed laboratory

conditions for length-of-stain detector tubes and their associated pump (detector tube measurement

system) used for short-term measurements of the concentration of specified chemical agents in

workplace air.

This International Standard is not applicable to measurements made to demonstrate compliance with

long-term limit values to personal exposure with a reference period of more than 15 min.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

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

ISO 6141, Gas analysis – Requirements for certificates for calibration gases and gas mixtures

ISO 6142, Gas analysis — Preparation of calibration gas mixtures — Gravimetric method

ISO 6143, Gas analysis — Comparison methods for determining and checking the composition of

calibration gas mixtures

ISO 6144, Gas analysis — Preparation of calibration gas mixtures — Static volumetric method

ISO 6145-1, Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods —

Part 1: Methods of calibration

ISO 6145-4, Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods —

Part 4: Continuous syringe injection method

ISO 6145-6, Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods —

Part 6: Critical orifices

ISO 6145-10, Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods —

Part 10: Permeation method

ISO 9169, Air quality — Definition and determination of performance characteristics of an automatic

measuring system
IEC 60079-0, Explosive atmospheres – Part 0: Equipment – General requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
© ISO 2015 – All rights reserved 1
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SIST EN ISO 17621:2015
ISO 17621:2015(E)
3.1
(length-of-stain) detector tube

transparent tube containing chemical reagents in which a colour change is produced when an air

sample is drawn through it

Note 1 to entry: The length of the stain produced, relative to a graduated scale, provides a measure of the

concentration of a specific chemical agent in air.

Note 2 to entry: Some detector tubes are designed to work in two stages. In that case, a pre-tube and an analyser

tube are used in series to produce one measurement.

[SOURCE: EN 1540:2011, 3.2.4, modified — “glass tube” replaced by “transparent tube” and Note 2 to

entry added.]
3.2
short-term detector tube

detector tube category that provides a means of obtaining a rapid measurement of the concentration of

a specified chemical agent in air

Note 1 to entry: The averaging period of the measurement can vary from a few seconds up to about 15 min

depending on the measurement system and the target concentration of the analyte.
3.3
detector tube pump
device for pulling air through a detector tube

Note 1 to entry: Detector tube pumps can be manually or mechanically driven stroke pumps or piston pumps.

Note 2 to entry: Other types of detector tube pumps which are not dealt with in this International Standard are

electrically driven continuous pumps, which can emulate stroke pumps.
3.4
detector tube measurement system

complete measurement system consisting of a detector tube and a detector tube pump

3.5
chemical agent

chemical element or compound on its own or admixed as it occurs in the natural state or as produced,

used, or released, including release as waste, by any work activity, whether or not produced intentionally

and whether or not placed on the market
[SOURCE: EN 1540:2011, 2.1.2]
3.6
(detector tube) measuring range
scale of concentration which is marked on the detector tube

Note 1 to entry: By increasing or decreasing the number of sampling strokes, the measuring range can be shifted

lower or higher.
3.7
specified (detector tube) measuring range

concentration range for which the measurement uncertainty of the detector tube is below a given value

3.8
interferent

constituent of the (air) sample having an adverse effect on the accuracy of the measurement

[SOURCE: EN 1540:2011, 4.5]
2 © ISO 2015 – All rights reserved
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SIST EN ISO 17621:2015
ISO 17621:2015(E)
3.9
test gas

gas of sufficient stability and homogeneity whose composition is properly established for use to verify

the response of a measuring instrument or to validate a measurement method
3.10
expanded uncertainty

quantity defining an interval about a result of a measurement, expected to encompass a large fraction

of the distribution of values that could reasonably be attributed to the measurand

[SOURCE: EN 1540:2011, 5.2.6]
3.11
reference period

specified period of time for which the occupational exposure limit value of a chemical or biological

agent applies

Note 1 to entry: The reference period is usually 8 h for long term measurements and 15 min for short-term

measurements.
[SOURCE: EN 1540:2011, 2.4.7]
4 Requirements
4.1 General

A functional detector tube measurement system consists of a detector tube and a detector tube

pump. All components of the detector tube measurement system should be calibrated by the same

manufacturer.

Materials used for the construction of the detector tube pump should be such that it remains functional

for a period of at least three years when used in accordance with the manufacturer’s instructions.

It is the user’s primary responsibility to choose appropriate procedures or devices that meet the

requirements of this International Standard. One way of doing this is to obtain information or

confirmation from the manufactu
...

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