EN ISO 10882-2:2024

SLOVENSKI STANDARD
01-oktober-2024
Nadomešča:
SIST EN ISO 10882-2:2002
Varnost in zdravje pri varjenju in sorodnih postopkih - Vzorčenje prašnih delcev in
plinov iz dihalnega območja varilca - 2. del: Vzorčenje plinov (ISO 10882-2:2024)
Health and safety in welding and allied processes - Sampling of airborne particles and
gases in the operator's breathing zone - Part 2: Sampling of gases (ISO 10882-2:2024)
Arbeits- und Gesundheitsschutz beim Schweißen und bei verwandten Verfahren -
Probenahme von partikelförmigen Stoffen und Gasen im Atembereich des Schweißers -
Teil 2: Probenahme von Gasen (ISO 10882-2:2024)
Hygiène et sécurité en soudage et techniques connexes - Échantillonnage des particules
en suspension et des gaz dans la zone respiratoire des opérateurs - Partie 2:
Échantillonnage des gaz (ISO 10882-2:2024)
Ta slovenski standard je istoveten z: EN ISO 10882-2:2024
ICS:
13.040.30 Kakovost zraka na delovnem Workplace atmospheres
mestu
13.100 Varnost pri delu. Industrijska Occupational safety.
higiena Industrial hygiene
25.160.01 Varjenje, trdo in mehko Welding, brazing and
spajkanje na splošno soldering in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 10882-2
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2024
EUROPÄISCHE NORM
ICS 13.100; 25.160.01 Supersedes EN ISO 10882-2:2000
English Version
Health and safety in welding and allied processes -
Sampling of airborne particles and gases in the operator's
breathing zone - Part 2: Sampling of gases (ISO 10882-
2:2024)
Hygiène et sécurité en soudage et techniques connexes Arbeits- und Gesundheitsschutz beim Schweißen und
- Échantillonnage des particules en suspension et des bei verwandten Verfahren - Probenahme von
gaz dans la zone respiratoire des opérateurs - Partie 2: partikelförmigen Stoffen und Gasen im Atembereich
Échantillonnage des gaz (ISO 10882-2:2024) des Schweißers - Teil 2: Probenahme von Gasen (ISO
10882-2:2024)
This European Standard was approved by CEN on 2 September 2023.

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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10882-2:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 10882-2:2024) has been prepared by Technical Committee ISO/TC 44 "Welding
and allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding and allied
processes” the secretariat of which is held by AFNOR.
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 November 2024, and conflicting national standards
shall be withdrawn at the latest by November 2024.
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.
This document supersedes EN ISO 10882-2:2000.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, 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.
Endorsement notice
The text of ISO 10882-2:2024 has been approved by CEN as EN ISO 10882-2:2024 without any
modification.
International
Standard
ISO 10882-2
Second edition
Health and safety in welding and
2024-04
allied processes — Sampling of
airborne particles and gases in the
operator's breathing zone —
Part 2:
Sampling of gases
Hygiène et sécurité en soudage et techniques connexes —
Échantillonnage des particules en suspension et des gaz dans la
zone respiratoire des opérateurs —
Partie 2: Échantillonnage des gaz
Reference number
ISO 10882-2:2024(en) © ISO 2024

ISO 10882-2:2024(en)
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Email: copyright@iso.org
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Published in Switzerland
ii
ISO 10882-2:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
3.1 General terms .2
3.2 Measurement terms .2
3.3 Welding terms .4
3.4 Analytical terms .4
4 Description of measurement methods . 5
4.1 General .5
4.2 Direct reading electrical apparatus . .6
4.2.1 Applicability .6
4.2.2 Operating principles .6
4.2.3 Availability .6
4.3 Detector tubes .6
4.3.1 Applicability .6
4.3.2 Pumped detector tubes .6
4.3.3 Diffusive detector tubes .7
4.4 Indirect methods involving laboratory analysis .7
4.4.1 Applicability .7
4.4.2 Pumped sampler methods .7
4.4.3 Diffusive sampler methods .8
5 Requirements . 8
6 Assessment strategy . 8
7 Measurement strategy . 9
7.1 General .9
7.2 Personal exposure measurements .9
7.3 Fixed-point measurements .9
7.4 Selection of measurement conditions and measurement pattern .9
7.4.1 General .9
7.4.2 Screening measurements of time-weighted average concentration and worst-
case measurements .9
7.4.3 Measurements for comparison with occupational exposure limit values and
periodic measurements .10
8 Sampling . 10
8.1 Sampling position .10
8.1.1 Personal sampling .10
8.1.2 Fixed-point sampling .11
8.2 Sampling equipment .11
8.2.1 Direct reading electrical apparatus .11
8.2.2 Detector tubes .11
8.2.3 Pumped sorbent tubes .11
8.2.4 Diffusive samplers .11
8.2.5 Construction materials .11
8.3 Sample filtration .11
8.4 Multiple sampling .11
8.5 Volume of sampling line. 12
8.6 Flow rate . 12
8.7 Handling of temperature, pressure and humidity data . 12
9 Measurement of individual gases and vapours.12

iii
ISO 10882-2:2024(en)
9.1 General . 12
9.2 Ozone (0,01 ppm to 3 ppm) . . 12
9.2.1 Special sampling requirements . 12
9.2.2 Direct reading electrical apparatus . 12
9.2.3 Detector tubes . 13
9.2.4 Indirect methods involving laboratory analysis . 13
9.3 Carbon monoxide (3 ppm to 500 ppm) . 13
9.3.1 Direct reading electrical apparatus . 13
9.3.2 Detector tubes . 13
9.3.3 Indirect methods involving laboratory analysis . 13
9.4 Carbon dioxide (500 ppm to 100 000 ppm) . 13
9.4.1 Origin . 13
9.4.2 Direct reading electrical apparatus . 13
9.4.3 Detector tubes .14
9.4.4 Indirect methods involving laboratory analysis .14
9.5 Nitric oxide (1 ppm to 100 ppm) and nitrogen dioxide (0,3 ppm to 250 ppm) .14
9.5.1 General .14
9.5.2 Direct reading electrical apparatus .14
9.5.3 Detector tubes .14
9.5.4 Indirect methods involving laboratory analysis .14
9.6 Vapours . 15
9.6.1 General . 15
9.6.2 Direct reading electrical apparatus . 15
9.6.3 Detector tubes . 15
9.6.4 Indirect methods involving laboratory analysis . 15
10 Recording of test data and presentation of results.15
Annex A (informative) Measurement of individual gases and vapours . 17
Annex B (informative) Example of a test report .18
Bibliography .21

iv
ISO 10882-2:2024(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 9, Health and safety, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 121, Welding and allied processes, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 10882-2:2000), which has been technically
revised.
The main changes are as follows:
— references to other documents have been updated;
— position of the personal sampler has been changed.
A list of all parts in the ISO 10882 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s
national standards body. A complete listing of these bodies can be found at
www.iso.org/members.html. Official interpretations of ISO/TC 44 documents, where they exist, are
available from this page: https://committee.iso.org/sites/tc44/home/interpretation.html.

v
ISO 10882-2:2024(en)
Introduction
Gases encountered during welding and allied processes are so numerous that it would be impracticable to
cover them all in this document. Depending on the process, they can include:
a) fuel gases which are used in gas welding and cutting, which on combustion produce carbon dioxide and,
in some instances, carbon monoxide;
b) shielding gases, such as argon, helium, carbon dioxide or mixtures of these gases, which can be toxic or
asphyxiant;
c) gases produced by the action of heat upon the welding flux or slag, e.g. carbon dioxide and carbon
monoxide;
d) gases produced by the action of heat or ultraviolet radiation upon the atmosphere surrounding the
welding arc, e.g. nitric oxide, nitrogen dioxide and ozone;
e) vapours produced as a result of thermal degradation of surface coatings in the welding or cutting of
metals treated with paint, primer, sealer or other substances. Vapours can also be produced as a result
of degradation of solvent vapour from degreasing operations, but their measurement is not dealt with in
this document because good working practices will avoid their production.
The scope of this document has been limited to those gases which are produced by welding operations. In
particular, fuel, oxidant and shielding gases used in welding and allied processes are not covered, since the
hazards associated with their use (e.g. asphyxiation, explosion) are different from those arising from the
gases dealt with in this document.
This document gives a generalised description of measurement methods suitable for the assessment of
personal exposure to gases produced by welding and allied processes; gives details of relevant European
Standards which specify required characteristics, performance requirements and test methods; augments
guidance provided in EN 689 on assessment strategy and measurement strategy; lists basic sampling
requirements; and provides specific information about the availability of direct reading electrical apparatus,
detector tubes and indirect methods involving laboratory analysis for individual gases.
It has been assumed in the drafting of this document that the execution of its provisions, and the
interpretation of the results obtained, is entrusted to appropriately qualified and experienced people.

vi
International Standard ISO 10882-2:2024(en)
Health and safety in welding and allied processes — Sampling of
airborne particles and gases in the operator's breathing zone —
Part 2:
Sampling of gases
1 Scope
This document provides guidance and specifications for the determination of personal exposure to gases
and vapours in welding and allied processes. It applies to the following thermal processes used to join, cut,
surface or remove metals:
(111) Manual metal arc welding (metal arc welding with covered electrode); shielded metal arc
welding /USA/
(114) Self-shielded tubular-cored arc welding
(131) Metal inert gas welding; MIG welding; gas metal arc welding /USA/
(135) Metal active gas welding; MAG welding; gas metal arc welding /USA/
(136) Tubular-cored metal arc welding with active gas shield; flux cored arc welding /USA/
(137) Tubular-cored metal arc welding with inert gas shield; flux cored arc welding /USA/
(141) Tungsten inert gas arc welding; TIG welding; gas tungsten arc welding /USA/
(15) Plasma arc welding;
(31) Oxy-fuel gas welding; oxy-fuel gas welding /USA/
(52) Laser beam welding;
(912) Flame brazing; torch brazing /USA/
(97) Braze welding;
— arc and flame gouging;
— arc and laser cutting processes;
— flame and plasma cutting processes;
— metal-spraying (see ISO 4063).
The following gases and vapours which can be produced or be present during welding and allied processes
are covered:
— ozone (O );
— carbon monoxide (CO);
— carbon dioxide (CO );
— nitric oxide (NO) and nitrogen dioxide (NO );
ISO 10882-2:2024(en)
— vapours produced in the welding or cutting of metals having paint or other surface coatings.
Fuel, oxidant and shielding gases used in welding and allied processes are not covered.
The general background level of gases and vapours in the workplace atmosphere influences personal
exposure, and therefore the role of fixed-point measurements is also considered.
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.
ISO 10882-1:2024, Health and safety in welding and allied processes — Sampling of airborne particles and gases
in the operator's breathing zone — Part 1: Sampling of airborne particles
EN 482, Workplace exposure — Procedures for the determination of the concentration of chemical agents —
Basic performance requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10882-1 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 General terms
3.1.1
work pattern
sequence of activities carried out by the worker during the period under consideration
3.1.2
workplace
designated area or areas in which the work activities are carried out
[SOURCE: ISO 18158:2016, 2.1.6.2]
3.2 Measurement terms
3.2.1
diffusive detector tube
diffusion tube, similar in construction to a pumped detector tube
Note 1 to entry: The length of the stain produced provides a measure of the exposure dose of a specified chemical
agent in air, stated in ppm hours.
3.2.2
pumped detector tube
glass tube containing chemical reagents in which a colour change can be produced when a sample of the
atmosphere is drawn through it
Note 1 to entry: The length of the stain produced provides a measure of the concentration of a specified chemical
agent in air.
ISO 10882-2:2024(en)
3.2.3
diffusion tube
diffusive tube
tube type diffusive sampler
diffusive sampler with a cross-sectional area which is small in relation to the internal air gap, across which
the gas or vapour passes by diffusion to the sorbent
3.2.4
diffusive badge
badge type diffusive sampler
passive badge
diffusive sampler in which the gas or vapour passes to the sorbent by permeation through a thin solid
membrane or diffusion across a porous membrane
Note 1 to entry: The cross-sectional area is large in relation to the internal air gap.
3.2.5
diffusive sampler
passive sampler
device which is capable of taking samples of gases or vapours from the atmosphere at a rate controlled by a
physical process such as gaseous diffusion through a static air layer or permeation through a membrane, but
which does not involve the active movement of air through the sampler
[SOURCE: EN 838]
3.2.6
direct reading electrical apparatus
direct reading instrument
apparatus in which the presence of a gas or vapour causes a change that is manifest as an automatically
generated electrical signal
Note 1 to entry: When applied to a calibrated indicating or recording meter, this gives a direct measure of the
concentration of the relevant gas or vapour.
3.2.7
fixed apparatus
apparatus which is intended to have all parts permanently installed
[SOURCE: EN 45544-1]
3.2.8
interferent
constituent of the (air) sample or other aspect of the sampling or analytical procedure having an adverse
effect on the accuracy of the measurement
Note 1 to entry: Interferents can include components of sampling or analysis equipment or reagents.
[SOURCE: ISO 18158:2016, 2.3.6]
3.2.9
long-term detector tube
detector tube that provides a means of obtaining a measurement of the time-weighted average concentration
of a specified chemical agent in air
3.2.10
portable apparatus
spot reading or continuously sensing apparatus that has been designed to be readily carried from place to
place and to be used while being carried
Note 1 to entry: Portable apparatus is battery powered.
[SOURCE: EN 45544-1]
ISO 10882-2:2024(en)
3.2.11
screening measurements of variation of concentration in time
measurements performed to provide information on the likely pattern of concentration of chemical agents
Note 1 to entry: They can be used to identify locations and periods of elevated exposure and to set the duration and
frequency of sampling for measurements for comparison with occupational exposure limit values.
Note 2 to entry: Emission sources can be located and the effectiveness of ventilation or other technical measures can
be estimated.
3.2.12
short-term detector tube
detector tube that provides a means of obtaining a rapid measurement (typically up to 15 min) of the
concentration of a specified chemical agent in air
[SOURCE: ISO 17621:2015, 3.2, modified — Definition revised and note to entry removed.]
3.2.13
sorbent tube
sampling device, usually made of metal or glass, containing a collection substrate such as a sorbent or a
support impregnated with reagent, through which sampled air passes
Note 1 to entry: Some sorbent tubes are intended for use as active samplers and some as passive samplers.
[SOURCE: ISO 18158:2016, 2.2.2.5]
3.2.14
transportable apparatus
apparatus not intended to be portable, but which can be readily moved from one place to another
[SOURCE: EN 45544-1]
3.2.15
worst-case measurements
screening measurements of time-weighted average concentration made to identify work activity during
which highest exposure occurs
3.3 Welding terms
3.3.1
welding episode
period during which the operator carries out welding and allied processes, including welding-related
operations, except when these generate a significant quantity of airborne particles, for example during
lengthy periods of grinding
3.3.2
welding protector
device which provides protection to the wearer from harmful optical radiation and other specific hazards
generated by welding and allied processes
EXAMPLE Welder’s shield, welder’s goggles or welder’s spectacles.
3.4 Analytical terms
3.4.1
bias
estimate of systematic measurement error
[SOURCE: ISO 18158:2016, 2.4.3.1, modified — Note 1 to entry removed.]

ISO 10882-2:2024(en)
3.4.2
selectivity
degree of independence from interferents
[SOURCE: EN 482]
3.4.3
true value
value which characterizes a quantity or quantitative characteristic perfectly defined in the conditions which
exist when that quantity or quantitative characteristic is considered
Note 1 to entry: The true value of a quantity or quantitative characteristic is a theoretical concept and, in general,
cannot be known exactly. In practice, a reference value is commonly accepted as the true value.
[SOURCE: ISO 18158:2016, 2.4.3.10]
3.4.4
overall uncertainty
quantity used to characterize as a whole the uncertainty of the
result given by an apparatus or a measuring procedure
Note 1 to entry: It is expressed, as a percentage, by a combination of bias and precision, usually according to the
formula:
xx−+2s
ref
×100
x
ref
where
x
is the mean value of results of a number (n) of repeated measurements;
x is the true or accepted reference value of concentration;
ref
s is the standard deviation of measurements.
4 Description of measurement methods
4.1 General
Personal exposure to gases and vapours in welding and allied processes is generally determined using:
— direct reading electrical apparatus;
— detector tubes (short term or long term); or
— indirect methods involving laboratory analysis.
Direct reading electrical apparatus or detector tubes are generally most applicable for measurement of
gases. Indirect methods, which involve laboratory analysis of samples collected using a suitable solid or
liquid sorbent, are most applicable for the determination of vapours which can be produced in the welding
or cutting of metals having paint or other coatings.
A complex mixture of particulates and gases is produced in welding and allied processes and, whatever
method of analysis is selected, it is necessary to confirm that techniques which have possibly been used
successfully in other applications are suitable for the welding situation.
In selecting any of the methods described, due regard should be paid to the possibility of interference with
the determinations of one gas or vapour by the presence of another, which could result in either enhancement
or reduction of the result.
ISO 10882-2:2024(en)
4.2 Direct reading electrical apparatus
4.2.1 Applicability
Direct reading electrical apparatus is more widely applicable than other means for the measurement of
personal exposure to gases in welding and allied processes, as it can be accurately calibrated and gives
instantaneous results. It can be used to obtain a continuous record of concentrations throughout the sample
period, and this can be integrated to determine the time-weighted average concentrations.
Direct reading electrical apparatus is therefore useful for making screening measurements of variation of
concentration in time, screening measurements of time-weighted average concentration, measurements for
comparison with occupational exposure limit values and periodic measurements.
4.2.2 Operating principles
Direct reading electrical apparatus usually operates by aspiration of a sample of the atmosphere in the
operator’s breathing zone into the apparatus through a sampling line, for example by means of a hand-
operated or electric air-sampling pump. Direct reading electrical apparatus is also available, which involves
transfer of the gas or vapour from the atmosphere to the sensor by diffusion.
Measurement is made directly or after reaction with solids, liquids or gases, usually by spectrophotometry or
using an electrochemical sensor. The electrical signal produced is applied to an indicating or recording meter,
which is normally calibrated to give a direct measure of the concentration of the relevant gas or vapour.
4.2.3 Availability
Fixed, transportable and portable apparatus is available for all the gases and some of the vapours covered
in this document. However, such apparatus is generally too large to be worn and it is necessary to place it in
a remote position and aspirate samples through an extended sampling line. Small self-contained personal
monitors are available for some gases and vapours, but these are primarily intended for protection of the
operator against acute hazards, some incorporating alarms that can be set to operate at predetermined
level. Such apparatus is normally less suitable than other means for measuring time-weighted average
concentrations.
4.3 Detector tubes
4.3.1 Applicability
The relative overall uncertainty and selectivity exhibited by detector tubes varies for different gases and
vapours. Furthermore, measurements made using detector tubes usually exhibit a greater relative overall
uncertainty than those obtained using direct reading apparatus or indirect methods involving laboratory
analysis. Detector tubes are therefore most useful for screening measurements of time-weighted average
concentration rather than measurements for comparison with occupational exposure limit values or
periodic measurements.
4.3.2 Pumped detector tubes
Pumped detector tubes are supplied in a sealed condition and it is necessary to break off both ends of the
tubes immediately before use. Use of a pumped detector tube to measure personal exposure to a gas or
vapour in welding and allied processes involves aspiration of a sample of the atmosphere in the operator’s
breathing zone through the tube using an appropriate air-sampling pump. If sampling is to be carried out
by directly positioning the detector tube in the breathing zone, it is necessary to protect the operator from
the exposed broken end by the attachment of a 10 mm length of plastic tubing. The air-sampling pump and
the detector tube, which together constitute a functional pumped detector tube measurement system, are
calibrated for use with each other. It is therefore necessary that they are supplied by the same manufacturer.
Short-term detector tubes are available for all the gases and many of the vapours covered in this document. A
discontinuously operating, hand-operated or battery-powered air-sampling pump is used with the tubes, for

ISO 10882-2:2024(en)
which sampling periods are typically up to a few minutes. Repeated measurements are therefore necessary
in order to determine time-weighted average concentrations.
Long-term detector tubes are available for most of the gases and many of the vapours covered in this
document. A continuously operating, battery-powered air-sampling pump is used with the tubes, for which
sampling periods may be up to 8 h. Long-term detector tubes are therefore much better suited than short-
term detector tubes for making measurements of 8 h time-weighted average concentrations.
4.3.3 Diffusive detector tubes
Diffusive detector tubes are supplied in a sealed condition, and it is necessary to open them at the sample
intake end immediately before use by breaking off the end at the appropriate breaking point. Use of a
diffusive detector tube to measure the exposure dose of a gas or vapour to which an operator is subjected
simply involves mounting it in a tube holder and positioning it in the breathing zone for an appropriate
sampling period, which may be up to 8 h.
Diffusive detector tubes are only available for a few of the gases and vapours covered in this document.
4.4 Indirect methods involving laboratory analysis
4.4.1 Applicability
Indirect methods involving laboratory analysis have separate sampling and analysis stages. They are the
most widely applicable for measurement of 8 h time-weighted average concentrations of vapours, such as
those produced in the welding
...