SIST EN 16589-2:2026

• Abstract:

  This document is applicable to test methods designed to be used at the place of installation of the articulated extraction arms (AEA), usually a laboratory and for various laboratory applications that require local extraction. They are used for commissioning after installation, for maintenance and for qualification purposes. For certain customer requirements additional or modified test methods can be necessary.; This document includes product functional performance referring to product standard detailed in EN 16589-1. Occupational health and safety assessments methods are not included in this document.; This document does not consider performance requirements for the extract air system associated with the AEA installation and therefore extract system performance is not part of the scope.; This document does not confirm or establish a capture zone of an AEA capture device only the functional extract capacity and mechanical functions of the AEA.

• Status: Published
• Public Enquiry End Date: 16-Jul-2025
• Publication Date: 01-Sep-2026
• ICS: 71.040.10 - Chemical laboratories. Laboratory equipment
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 27-Aug-2026
• Due Date: 01-Nov-2026
• Completion Date: 02-Sep-2026
• Ref Project: EN 16589-2:2026 - Laboratory local exhaust devices - Articulated extraction arms - Part 2: Commissioning and on-site testing

SIST EN 16589-2:2026 is the Slovenian national version of EN 16589-2:2026 for laboratory local exhaust devices with articulated extraction arms. It specifies commissioning and on-site testing methods for installed articulated extraction arms (AEA) so users can check functional extract capacity, mechanical operation and related performance in the laboratory where the device is used.

What does SIST EN 16589-2:2026 specify?

SIST EN 16589-2:2026 specifies test methods for articulated extraction arms installed at the place of use, usually a laboratory. It is intended for commissioning after installation, maintenance, and qualification work, and it can also be adapted for specific customer needs.

The standard focuses on product functional performance linked to EN 16589-1. It does not cover occupational health and safety assessment methods, extract air system performance for the connected building system, or confirmation of a capture zone.

The document is organized into scope, normative references, terms and definitions, commissioning, on-site periodic testing, and one informative annex.

Annex	What it covers
Annex A	Additional assessment methods for non-standard applications

What are the key requirements of SIST EN 16589-2:2026?

SIST EN 16589-2:2026 separates testing into two main activities - commissioning and on-site periodic testing. In practice, commissioning establishes reference values after installation, while periodic testing checks whether the AEA still performs like the commissioned installation.

Clause 4 - Commissioning

Clause 4 states that commissioning should be done on AEAs already type tested to EN 16589-1 before installation. The aim is to confirm correct supply and installation, and to identify any adverse effects from the AEA location, room airflow, the house extract system, or other ventilated devices. That matters because a well-designed device can still underperform in a poor room layout or with conflicting air movement.

Clause 4.2 requires inspections of the installed system. These include review of the as-installed arrangement, visual inspection, conformity of documentation, mechanical assembly and operation, alarms and indicators, and any capture zone indicator. In practice, this means checking labels, installation details, mounting security, movement through the full reach, holding stability, damage, and correct operation of alarms and indicators.

Clause 4.3 sets the test conditions and equipment. The standard calls for a low velocity anemometer, a duct airflow measuring device, distance measuring equipment, a low impulse airflow visualization device, and pressure measuring devices for two pressure ranges. The equipment needs suitable accuracy and traceability, so test results can be used later as reference values.

Clause 4.3.3 requires room air condition checks before detailed testing. Doors and windows remain closed, other extract systems normally operating stay on, and room airflow is examined with the AEA turned off. This matters because cross flows or make-up air can change capture performance and make the laboratory environment the real cause of a problem, not the AEA itself.

Clause 4.4 covers the actual test procedures. The standard uses air flow visualization, airflow measurements, pressure measurements, and sound pressure level measurement. Measurements are taken at the installed position, recorded by sketch or photo, and compared with manufacturer data and the relevant type test information.

Clause 4.5 requires a commissioning report with the responsible persons, legal entity, manufacturer or supplier, type designation, year of production, type test reference, test date and location, room air conditions, operating status of nearby devices, results of inspections and tests, and reference values for routine testing. This gives buyers and users a baseline for later checks.

Clause 5 - On-site periodic testing

Clause 5 is for periodic testing after commissioning. It compares current functional and flow performance with the commissioned values and allows the purchaser or user to select the tests needed for the application. If the use of the AEA has changed, the customer must decide whether re-commissioning is needed.

Clause 5.2 repeats the inspection topics from commissioning. Clause 5.3 repeats the test equipment and room checks from Clause 4, then asks for tracer visualization, airflow measurement, influence of environment on capture distance, and pressure loss checks. In practice, periodic testing is a shorter verification step, but it still depends on the earlier commissioned data.

Clause 5.4 requires a periodic test report with the same core identification details, a reference to the commissioning report and its reference values, room conditions, operating status, test results, and a reference to this document. That makes it possible to track drift in performance over time.

Annex A - non-standard applications

Annex A gives additional assessment methods when manufacturer type test data does not match the user’s risk assessment, for example when a different capture velocity is needed. It describes calculation-based approaches, including Fletcher’s equations, Fletcher’s nomogram, and calculation applications, then asks the user to verify the calculated distance by measurement. This is useful when the installed AEA must meet a specific capture task that goes beyond the original type test conditions.

What terms does SIST EN 16589-2:2026 define?

• Capture device - Equipment designed to capture or collect air pollutants near their source, such as a hood, flat screen or suction nozzle.
• Extraction arm - Fixed, flexible or articulated ducting that connects the capture device to the main extract air duct.
• Articulated extraction arm (AEA) - An articulated extract ducting assembly including the capture device, movable so the capture zone can be positioned near the hazard.
• Capture zone - The three-dimensional space in front of the entry surface where air velocity is high enough for effective pollutant capture.
• Entry plane - The plane touching the outermost parts of the capture device, regardless of shape.
• Measurement plane - The plane used in type testing to measure air velocity in front of the capture device.
• Capture velocity - The minimum air velocity required for effective capture of pollutants.
• Reachable workspace - The three-dimensional space in which the AEA entry plane can be positioned by moving the arm.

Who uses SIST EN 16589-2:2026?

SIST EN 16589-2:2026 is used by laboratories, customers, purchasers, installers, commissioning engineers, maintenance teams, and users responsible for local exhaust devices. It is relevant where articulated extraction arms are installed for laboratory applications that need local extraction.

It is particularly useful for people who need to verify performance after installation, collect reference values for future routine checks, or assess whether a changed laboratory setup still supports effective extraction. It also supports work on systems used around specific laboratory processes, including equipment such as HPLC, where distinct emission points may need local capture.

Which standards are used with SIST EN 16589-2:2026?

SIST EN 16589-2:2026 cites EN 16589-1:2022 as the product standard for articulated extraction arms and the source of the type test methods and related definitions. It is the main companion document for understanding the device requirements behind the commissioning checks.

EN 16211 provides the site method for measuring air flow rates in ducts and is used where duct airflow measurement is needed. EN ISO 5167-1 applies when in-duct measuring devices are installed and flow is measured using pressure differential principles.

EN ISO 11204 is used for measuring emission sound pressure level at the work station or another specified position with environmental corrections. The document also points to CEN/TS 17441 as guidance for laboratory ventilation systems.

What does the SIST EN 16589-2:2026 document contain?

The document contains inspection checklists, test procedures, reporting requirements, and supporting definitions for installed AEAs. It includes procedures for visual inspection, review of installed system details, documentation checks, mechanical operation checks, alarms and indicators, and capture zone indicators.

It also contains practical measurement methods for airflow visualization, airflow rate, pressure loss, room pressure difference, and sound pressure level. Figures show example AEA geometries, the entry plane and measurement plane, and the centreline measurement approach used to locate capture performance.

Annex A adds calculation-based methods for estimating capture distance and capture velocity for non-standard cases. It includes Fletcher-based equations, a nomogram, and a procedure for confirming the calculated result by measurement on the installed device.

SLOVENSKI STANDARD
01-oktober-2026
Laboratorijske lokalne odsesovalne naprave - Členkaste odsesovalne roke - 2. del:
Zagon in preskušanje na kraju samem
Laboratory local exhaust devices - Articulated extraction arms - Part 2: Commissioning
and on-site testing
Lokale Absaugeinrichtungen im Labor - Gelenkabsaugarm - Teil 2: Inbetriebnahme und
Vor‑Ort Prüfverfahren
Dispositifs d’aspiration locale de laboratoire - Bras articulés d’extraction - Partie 2 : Mise
en service et essais sur site
Ta slovenski standard je istoveten z: EN 16589-2:2026
ICS:
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 16589-2
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2026
EUROPÄISCHE NORM
ICS 71.040.10
English Version
Laboratory local exhaust devices - Articulated extraction
arms - Part 2: Commissioning and on-site testing
Dispositifs d'aspiration locale de laboratoire - Bras Lokale Absaugeinrichtungen im Labor -
d'extraction articulés - Partie 2 : Mise en service et Gelenkabsaugarm - Teil 2: Inbetriebnahme und Vor-
essais sur site Ort-Prüfverfahren
This European Standard was approved by CEN on 29 June 2026.

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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16589-2:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Commissioning . 8
4.1 General. 8
4.2 Inspections . 8
4.2.1 General. 8
4.2.2 Review of system as installed . 8
4.2.3 Visual inspection . 9
4.2.4 Conformity of documentation . 9
4.2.5 Mechanical assembly and operation . 9
4.2.6 Alarms and indicators . 9
4.2.7 Capture zone indicator . 9
4.3 Testing . 10
4.3.1 General. 10
4.3.2 Test equipment . 10
4.3.3 Room air condition checks . 10
4.4 Test procedures . 11
4.4.1 General. 11
4.4.2 Air flow visualization . 11
4.4.3 Airflow measurements . 11
4.4.4 Pressure measurements. 13
4.4.5 Sound pressure level . 13
4.5 Test report . 14
5 On-site periodic testing . 14
5.1 General. 14
5.2 Inspections . 14
5.2.1 Visual inspection . 14
5.2.2 Mechanical assembly and operation . 14
5.2.3 Alarms and indicators . 15
5.2.4 Capture zone indicator . 15
5.3 Testing . 15
5.3.1 Test equipment . 15
5.3.2 Room air condition check . 15
5.3.3 Tracer visualization . 15
5.3.4 Airflow measurements . 16
5.3.5 Influence of environment on capture distance . 16
5.3.6 Pressure loss . 16
5.4 Test report . 16
Annex A (informative) Additional assessment methods for non-standard applications . 17
Bibliography . 21
European foreword
This document (EN 16589-2:2026) has been prepared by Technical Committee CEN/TC 332 “Laboratory
equipment”, 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 February 2027, and conflicting national standards shall
be withdrawn at the latest by February 2027.
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.
Introduction
Articulated extraction arms (AEA) are local exhaust devices consisting of capture devices that can be
constructed in a variety of geometric shapes (hoods, nozzles, flat screens etc.) which are connected to or
mounted on extraction arms or arms with flexible joints. They are used for a variety of different
applications in the laboratory where contaminants are encountered. The design of articulated extract
arms for laboratories can differ for different applications.
The ability of capture devices to capture contaminants is subject to a number of factors. These factors are,
extract volume flow, capture velocity, capture hood design, manoeuvrability, position in relation to
emission source, user activity, air speed etc. The capture ability is rapidly decreased with increased
distance to the emission source. Higher air velocity in the opening of the device improves the capture
ability but commonly results in increased noise level and pressure drop of the capture device and extract
arm.
Good information to the user on how to use the device as well as information about the limitations of the
device are essential for safety and health in the laboratories.
Articulated extract arms are useful for very small emission sources or when the emission source is too
large to reasonably be enclosed but has distinct emission points where the pollution might occur like e.g.
a high-performance liquid chromatography (HPLC).
Type test protocols detailed in EN 16589-1 cannot be replicated on site due to the large variances in room
conditions and AEA positioning.
This document therefore provides methods for Commissioning and Testing of AEAs that will provide
practical detail on the function and basic flow characteristics of air at an installed AEA.
The suitability of an AEA to provide effective ventilation at or near a source of contamination is the
responsibility of the customer and will be subject of a risk assessment. Good practice dictates that full
consideration is given to both local regulatory guidance and hygiene practice.
1 Scope
This document is applicable to test methods designed to be used at the place of installation of the
articulated extraction arms (AEA), usually a laboratory and for various laboratory applications that
require local extraction. They are used for commissioning after installation, for maintenance and for
qualification purposes. For certain customer requirements additional or modified test methods can be
necessary.
This document includes product functional performance referring to product standard detailed in
EN 16589-1. Occupational health and safety assessments methods are not included in this document.
This document does not consider performance requirements for the extract air system associated with
the AEA installation and therefore extract system performance is not part of the scope.
This document does not confirm or establish a capture zone of an AEA capture device only the functional
extract capacity and mechanical functions of the AEA.
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 16211, Ventilation for buildings - Measurement of air flow rates on site – Methods
EN 16589-1:2022, Laboratory local exhaust devices - Part 1: General requirements and type test methods
for articulated extraction arms
EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular
cross-section conduits running full - Part 1: General principles and requirements (ISO 5167-1)
EN ISO 11204, Acoustics - Noise emitted by machinery and equipment - Determination of emission sound
pressure levels at a work station and at other specified positions applying accurate environmental
corrections (ISO 11204)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 16589-1 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/ui
— IEC Electropedia: available at https://www.electropedia.org/
3.1
capture device
equipment designed to capture or collect air pollutants near their source connected directly to a duct or
mounted on an extraction arm
EXAMPLE hood, flat screen, suction nozzle
[SOURCE: EN 16589-1:2022, 3.1, modified]
3.2
extraction arm
fixed, flexible or articulated ducting connecting the capture device with the main extract air duct
[SOURCE: EN 16589-1:2022, 3.2]
3.3
articulated extraction arm
AEA
articulated extract ducting assembly including capture device
Note 1 to entry: The articulated extraction arm can be moved and positioned so that the capture zone of the hood
is located at the identified hazard release zone. See examples in Figure 1.

Key
ν schematic capture zone
a centre point of entry plane
b duct of capture device
c duct connecting to main duct
1 main duct
2 articulated extraction arms
3 entry plane
4 capture device
Figure 1 — Example of common designs of capture devices and extraction arms
[SOURCE: EN 16589-1:2022, 3.3]
3.4
capture zone
three-dimensional space in front of the entry surface of a capture device in which the air velocity is
greater than or equal to the minimum air velocity required for effective capture of pollutants
[SOURCE: EN 16589-1:2022, 3.4, modified – “plane” replaced with “surface”]
3.5
entry plane
plane touching the outermost parts of the capture device regardless of the shape
Note 1 to entry: A schematic expression of entry plane independent of the shape is given in Figure 1 and Figure 2.
[SOURCE: EN 16589-1:2022, 3.5, modified – Reference to Figure 2 instead of Figure 3]
3.6
measurement plane
two-dimensional area in front of the capture device and parallel to the entry surface used in type testing
Note 1 to entry: Distance from the measuring position to the entry surface is specified in the air velocity
measurement procedure for type tests. A schematic layout showing position of the measurement plane in relation
to the entry plane is included in Figure 2.

Key
1 capture device
2 duct of capture device
3 entry plane
4 measurement plane (as used for type test evaluation)
5 centre line
D internal diameter of the duct of the capture device
L measurement plane distance from the capture device entry surface specified in the air velocity
mp
measurement procedure
Figure 2 — Schematic layout showing position of the measurement plane in relation to the entry
plane
[SOURCE: EN 16589-1:2022, 3.5, modified – Numbering of figure adjusted to document]
3.7
capture velocity
air velocity that is equal to the minimum air velocity required for effective capture of pollutants
3.8
capture distance
distance from the AEA at which the capture velocity (0,2 m/s or 0,4 m/s) is present
3.9
reachable workspace
three-dimensional workspace in which the positioning of the entry plane is achievable with movement
of an articulated extraction arm
Note 1 to entry: The capture zone extract volume flow can vary with changes in the articulated extraction arm
configuration.
[SOURCE: EN 16589-1:2022, 3.8]
3.10
operational working zone
space where the activity or process generates the contaminant cloud to be removed by the capture device
4 Commissioning
4.1 General
The following test methods are considered to be appropriate for the commissioning test after installation
of an AEA (or multiple AEAs on the same extract system) which has been type tested in accordance with
EN 16589-1 prior to installation. It is the aim of commissioning testing to show the correct supply and
installation of the AEA (or multiple AEA’s on the same extract system) and to check adverse effects of the
AEA location, intended extract position, room airflow, the house air extract system and other ventilated
devices on the performance of the installed AEAs connected to the extract system.
Commissioning testing activities shall be carried out using a selection of test methods detailed in this
document.
Consideration should be given to guidance given in CEN/TS 17441 and EN 16589-1:2022, Annex A.
NOTE Consultation between professional parties at system design stage and commissioning is essential to
ensure the AEA System will operate effectively within the environment it is intended.
4.2 Inspections
4.2.1 General
The following items, 4.2.2 and 4.2.3, shall be proven by inspection.
4.2.2 Review of system as installed
It is the customers responsibility to ensure that the extract air system is suitable for AEA devices fitted.
Verify that extract air system has been commissioned according to AEA requirements detailed by the AEA
manufacturer.
Check and record design parameters such as:
— transition detail between AEA assembly and house extract;
— pressure;
— volume flow;
— concurrency / multiple AEA setup;
— temperature range.
4.2.3 Visual inspection
A visual inspection of the assembly and installation shall be carried out in accordance with
manufacturer’s instructions (such as manual or datasheet supplied with system).
— system labelling (identification and conformity label);
— manufactures’ identification.
4.2.4 Conformity of documentation
Review manufacturer’s documentation to verify conformity to EN 16589-1.
4.2.5 Mechanical assembly and operation
Check mechanical assembly and stability of AEA referring to system manual or specification document.
— Check for system completeness in accordance with manufacturers documentation.
— Identify connection arrangement to extract system and mounting detail.
— Where possible, check fixture to extract air system is secure.
— Check AEA achieves maximum and minimum reach as specified by the manufacturer.
— Check the hold stability at maximum and minimum reach positions – AEA to hold position without
additional support.
— Inspect all movable parts (bends, retention sections such as gas struts and springs).
— Check for damage to any part of the AEA device.
4.2.6 Alarms and indicators
Identify alarm / indicator type (visual indication, pressure or flow) and location.
— Check that indicator of the airflow or the air pressure is installed on the AEA.
— Check alarm associated with this indicator is installed.
— Check function is in accordance with EN 16589-1.
4.2.7 Capture zone indicator
If capture zone indicator is fitted, check indicator works as described in user manual.
4.3 Testing
4.3.1 General
The purpose of the following test protocols is to establish a set of test results that will establish that an
AEA is operating within manufactures specifications in the position or positions in which the AEA will be
used.
Another aim is to obtain reference values for comparison in subsequent routine tests.
Testing shall be carried out under the conditions of the expected configuration and use (single or multiple
AEAs in operation at any one time). For example, where there are multiple AEAs expected to be used at
the same time then testing shall take place with those multiple AEAs in operation.
4.3.2 Test equipment
The following test equipment shall be used:
— Low velocity anemometer, suitable for measuring air velocities in the range 0,05 m/s to 3 m/s with
an accuracy of 0,02 m/s ± 5 % of the reading or better, with a response t
...