EN 17634:2023

Electronic cigarettes and e-liquids - Determination of nicotine delivery consistency over defined puff sequences of a number of e-cigarettes of identical type

This document specifies a method for the determination of nicotine delivery consistency between e-cigarettes (devices, consumables and combinations).
This document:
-   defines the equipment to be used;
-   specifies the preparation of the samples for testing;
-   specifies the aerosol collection process;
-   specifies the analytical method.
Suitable sampling procedures are described for obtaining results from within a single production batch, as well as for sampling across batches.
The method in this document does not seek to demonstrate whether there is consistency between puffs generated at the start or nearer the end of a tank fill or battery charge. The latter is the aim of a separate method under development, EN 17746 Electronic cigarettes and e-liquids — Determination of nicotine delivery consistency over defined puff sequences within a single e-cigarette [1]. Two separate methods have been developed to determine consistency of nicotine delivery, pending regulatory clarity on the Tobacco Products Directive's requirement to "deliver nicotine doses at consistent levels" [2].

Elektronische Zigaretten und E-Liquids - Bestimmung der gleichmäßigen Abgabe von Nikotin über definierte Zugsequenzen einer Anzahl von E-Zigaretten identischen Typs

Dieses Dokument legt ein Verfahren zur Bestimmung der gleichmäßigen Abgabe von Nikotin zwischen E Zigaretten (Geräte, Verbrauchsmaterialien und Kombinationen) fest.
Dieses Dokument:
-   legt die anzuwendenden Geräte fest;
-   legt die Vorbereitung der zu untersuchenden Proben fest;
-   legt den Sammelvorgang von Aerosolen fest;
-   legt das Analysenverfahren fest.
Es werden geeignete Probenahmeverfahren beschrieben, um Ergebnisse innerhalb einer einzelnen Produktionscharge zu erhalten und um eine chargenübergreifende Probenahme durchzuführen.
Ziel des Verfahrens nach diesem Dokument ist es nicht, nachzuweisen, ob eine Gleichmäßigkeit zwischen den zu Beginn und den gegen Ende einer Tankfüllung oder Batterieladung durchgeführten Zügen vorliegt. Letzteres ist das Ziel eines anderen Verfahrens, das mit EN 17746, Elektronische Zigaretten und Liquids für elektronische Zigaretten - Bestimmung der gleichmäßigen Abgabe von Nikotin über definierte Zugsequenzen innerhalb einer einzelnen E-Zigarette[1], entwickelt wird. Zwei unterschiedliche Verfahren wurden entwickelt, um die gleichmäßigen Abgabe von Nikotin zu bestimmen, bis Rechtsklarheit über die Festlegung der Richtlinie über Tabakerzeugnisse besteht, dass "Nikotindosen auf einem gleichmäßigen Niveau abgegeben werden"[2].

Cigarettes électroniques et e-liquides - Détermination de la constance de délivrance de la nicotine lors de séquences de bouffées définies avec plusieurs e-cigarettes identiques

Le présent document spécifie une méthode de détermination de la constance de délivrance de la nicotine entre des e cigarettes (dispositifs, consommables et combinaison des deux).
Le présent document :
—   définit l’équipement à utiliser ;
—   spécifie la préparation des échantillons pour les essais ;
—   spécifie le processus de collecte de l’aérosol ;
—   spécifie la méthode d’analyse.
Des modes opératoires d’échantillonnage appropriés sont décrits, afin d’obtenir des résultats à partir d’un seul lot de production, mais aussi à partir de plusieurs lots.
La méthode présentée dans ce document ne cherche pas à démontrer s’il y a une constance entre les bouffées produites au début ou vers la fin d’un contenant ou d’une charge de batterie. Cette dernière fait l’objet d’une méthode séparée en cours d’élaboration, l’EN 17746 Cigarettes électroniques et e liquides — Détermination de la constance de délivrance de la nicotine lors de séquences de bouffées définies avec une seule e cigarette [1]. Deux méthodes séparées ont été mises au point pour déterminer la constance de délivrance de la nicotine, en attendant la clarification réglementaire de l’exigence de la Directive sur les produits du tabac stipulant de « libérer les doses de nicotine de manière constante » [2].

Elektronske cigarete in e-tekočine - Ugotavljanje konsistentnosti porazdelitve nikotina v določenem zaporedju vdihavanja pri več e-cigaretah enakega tipa

Ta dokument določa metodo za ugotavljanje konsistentnosti porazdelitve nikotina v določenem zaporedju vdihavanja pri več e-cigaretah enakega tipa.
Opisani so ustrezni postopki vzorčenja za pridobivanje rezultatov znotraj ene proizvodne serije in tudi za vzorčenje v več serijah. Vzorčenje znotraj ene serije je običajno potrebno, kadar je treba pridobiti podatke za predložitev regulativnemu organu. Z vzorčenjem v več komercialno proizvedenih serijah se poveča razumevanje konsistentnosti.
Ta dokument:
opredeljuje opremo, ki jo je treba uporabljati;
določa pripravo vzorcev e-cigaret za preskušanje;
določa postopek zbiranja aerosolov;
določa analitično metodo.

General Information

• Status: Published
• Publication Date: 16-May-2023
• ICS: 65.160 - Tobacco, tobacco products and related equipment
• Technical Committee: CEN/TC 437 - Electronic cigarettes and e-liquids
• Drafting Committee: CEN/TC 437/WG 4 - Requirements and test methods for emissions
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 17-May-2023
• Due Date: 12-Jul-2022
• Completion Date: 17-May-2023
• Ref Project: SIST EN 17634:2023 - Electronic cigarettes and e-liquids - Determination of nicotine delivery consistency over defined puff sequences of a number of e-cigarettes of identical type

Overview

EN 17634:2023 - Electronic cigarettes and e-liquids: Determination of nicotine delivery consistency over defined puff sequences of a number of e‑cigarettes of identical type - is a CEN standard that specifies a laboratory method to measure and compare nicotine delivery consistency between multiple e‑cigarettes (devices, consumables or combinations). The method defines required equipment, sample preparation, aerosol collection and analytical measurement to assess whether nominally identical products deliver nicotine at consistent levels across units and production batches.

Key topics and technical requirements

• Scope: Tests consistency between separate e‑cigarette units of the same model; it does not assess within‑device variation across a tank fill or battery charge (see EN 17746 for within‑device sequences).
• Apparatus and conditions: Uses a routine analytical vaping machine meeting ISO 20768 conditions and analytical procedures referenced in EN ISO 24199 and EN ISO 24197. EN ISO 24199 defines the apparatus and trapping/collection setup.
• Sampling: Minimum sample size of at least 10 e‑cigarettes for the main consistency evaluation; an initial two units are used to determine sequence size (recommended total preparation of at least 12 units, with 2 spare).
• Sequence definition: Nicotine delivery is measured from the first two puff sequences of each device. Sequence length (number of puffs) is selected based on estimated e‑liquid vaporized mass (EVM) per puff; recommended sequences range (e.g., 50 puffs if ≤5 mg/puff; 20 puffs for ≤15 mg/puff; 10 puffs for ≤30 mg/puff; 5 puffs if >30 mg/puff).
• Pre‑test checks: Inspection for leaks, battery charge verification, priming procedures (where no user instructions exist, first 5 puffs to waste), and weighing to the nearest 1 mg for mass balance calculations.
• Data quality: Calculation of EVM, captured aerosol mass and nicotine per sequence, with guidance on handling statistical outliers and repeat testing.

Practical applications and users

• Who uses it: testing laboratories, e‑cigarette manufacturers, quality control teams, product development groups and regulators.
• Practical uses:
  • Batch quality control and acceptance testing for nicotine delivery consistency
  • Comparative performance testing across device lots or product variants
  • Supporting regulatory submissions or compliance evaluations related to nicotine dose consistency
  • R&D and design verification of device/coil/e‑liquid combinations

Related standards

• EN ISO 24199 - Determination of nicotine in vapour emissions (GC method)
• EN ISO 24197 - Determination of e‑liquid vaporized mass and aerosol collected mass
• ISO 20768 - Routine analytical vaping machine: definitions and standard conditions
• EN 17375 - Reference e‑liquids
• EN 17746 - Within‑device nicotine delivery consistency (under development / complementary)

EN 17634:2023 provides a standardized, repeatable protocol for evaluating nicotine delivery consistency across identical e‑cigarettes, helping industry and regulators ensure reliable measurement and informed product quality decisions. Keywords: EN 17634:2023, nicotine delivery consistency, electronic cigarettes, e‑liquids, aerosol collection, analytical vaping machine, ISO 20768.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2023
Elektronske cigarete in e-tekočine - Ugotavljanje konsistentnosti porazdelitve
nikotina v določenem zaporedju vdihavanja pri več e-cigaretah enakega tipa
Electronic cigarettes and e-liquids - Determination of nicotine delivery consistency over
defined puff sequences of a number of e-cigarettes of identical type
Elektronische Zigaretten und Liquids für elektronische Zigaretten - Bestimmung der
Konsistenz der Nikotinabgabe über definierte Zugsequenzen einer Anzahl von E-
Zigarette identischen Typs
Cigarettes électroniques et e-liquides - Détermination de la constance de délivrance de
la nicotine lors de séquences de bouffées définies avec plusieurs e-cigarettes identiques
Ta slovenski standard je istoveten z: EN 17634:2023
ICS:
65.160 Tobak, tobačni izdelki in Tobacco, tobacco products
oprema and related equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17634
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2023
EUROPÄISCHE NORM
ICS 65.160
English Version
Electronic cigarettes and e-liquids - Determination of
nicotine delivery consistency over defined puff sequences
of a number of e-cigarettes of identical type
Cigarettes électroniques et e-liquides - Détermination Elektronische Zigaretten und E-Liquids - Bestimmung
de la constance de délivrance de la nicotine lors de der gleichmäßigen Abgabe von Nikotin über definierte
séquences de bouffées définies avec plusieurs e- Zugsequenzen einer Anzahl von E-Zigaretten
cigarettes identiques identischen Typs
This European Standard was approved by CEN on 10 March 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17634:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 6
5 Apparatus . 6
6 Sampling of test e-cigarettes . 6
7 Generation and collection of total aerosol matter . 6
7.1 E-cigarette preparation for analytical vaping . 6
7.1.1 General . 6
7.1.2 Disposable e-cigarettes . 6
7.1.3 Rechargeable e-cigarettes . 6
7.1.4 Refillable e-cigarettes . 6
7.2 Preliminary tests before vaping . 7
7.3 Vaping and collection of aerosol matter . 7
7.3.1 Vaping plan . 7
7.3.2 Preparation for vaping run . 7
7.3.3 Procedure for vaping run . 7
7.3.4 Determination of nicotine . 8
7.4 Determination of nicotine consistency . 8
8 Test report . 9
Bibliography . 11

European foreword
This document (EN 17634:2023) has been prepared by Technical Committee CEN/TC 437 “Electronic
cigarettes and e‐liquids”, 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 2023, and conflicting national standards shall
be withdrawn at the latest by November 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.
1 Scope
This document specifies a method for the determination of nicotine delivery consistency between e‐
cigarettes (devices, consumables and combinations).
This document:
— defines the equipment to be used;
— specifies the preparation of the samples for testing;
— specifies the aerosol collection process;
— specifies the analytical method.
Suitable sampling procedures are described for obtaining results from within a single production batch,
as well as for sampling across batches.
The method in this document does not seek to demonstrate whether there is consistency between puffs
generated at the start or nearer the end of a tank fill or battery charge. The latter is the aim of a separate
method under development, EN 17746 Electronic cigarettes and e-liquids — Determination of nicotine
delivery consistency over defined puff sequences within a single e-cigarette [1]. Two separate methods have
been developed to determine consistency of nicotine delivery, pending regulatory clarity on the Tobacco
Products Directive's requirement to “deliver nicotine doses at consistent levels” [2].
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 17375, Electronic cigarettes and e-liquids — Reference e-liquids
EN ISO 24197, Vapour products — Determination of e-liquid vaporized mass and aerosol collected mass
(ISO 24197)
EN ISO 24199, Vapour products — Determination of nicotine in vapour product emissions — Gas
chromatographic method (ISO 24199)
ISO 20768, Vapour products — Routine analytical vaping machine — Definitions and standard conditions
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:
— ISO Online browsing platform: available at https://www.iso.org/obp/ui
— IEC Electropedia: available at https://www.electropedia.org/
3.1
aerosol
system of colloidal particles suspended in gas by the use of an e‐cigarette
Note 1 to entry: Vapour is a generally accepted, but scientifically incorrect, term for aerosol.
3.2
clearomizer
e‐liquid reservoir with in‐built atomizer
3.3
coil
resistive component of the atomiser
Note 1 to entry: Coils are made of metal, ceramic, or other resistive materials.
3.4
electronic cigarette
e-cigarette
product, that vaporises e‐liquid to generate an inhalable aerosol carried by air drawn through the device
by the user
Note 1 to entry: Electronic cigarette is also referred to as e‐cig, vapour product, personal vaporizer or
ENDS/ENNDS.
Note 2 to entry: Electronic cigarette differs from tobacco products in that they do not contain tobacco.
3.5
e-liquid
base liquid, which may or may not contain nicotine and/or additives, intended for transformation into an
aerosol by an electronic cigarette
3.6
e-liquid cartridge
e‐liquid container that can be loaded directly into an e‐cigarette, which can be disposable
3.7
e-liquid vaporized mass
EVM
mass of e‐liquid transferred from the vapour product to the aerosol
3.8
identical e-cigarettes
e‐cigarettes made according to the same technical specifications and with the same brand and model
name
3.9
nicotine
(S)‐3‐(1‐methyl‐2‐pyrrolidinyl) pyridine, conforming to the Chemical Abstracts Service nomenclature
under No CAS: 54‐11‐5
3.10
open system
electronic cigarette where the user fills a reservoir with e‐liquid
3.11
sequence
defined number of
...