EN 15426:2018

Candles - Specification for sooting behaviour

This document specifies requirements and the test method for evaluating the sooting behaviour of burning indoor candles. It is applicable to single wick candles with a diameter up to 100 mm or equivalent cross sectional area intended to be burned indoors.
NOTE Single wick candles with a diameter above 100 mm or equivalent cross sectional area and multiwick candles cannot be evaluated with this test method for technical reasons. Evaluation of the visible release of soot is a possibility for these candles.

Kerzen - Spezifikation für das Rußverhalten

Dieses Dokument legt Anforderungen an das Prüfverfahren für die Beurteilung des Rußverhaltens bren-nender Kerzen für den Innenraum fest. Es ist anwendbar an Eindochtkerzen mit einem Durchmesser bis zu 100 mm oder einer entsprechenden Querschnittsfläche, die für den Abbrand im Innenraum bestimmt sind.
ANMERKUNG Eindochtkerzen mit einem Durchmesser von über 100 mm oder entsprechendem Querschnitt können aus technischen Gründen nicht anhand dieses Prüfverfahrens bewertet werden. Für solche Kerzen ist die Beurteilung der sichtbaren Rußfreisetzung eine Möglichkeit.

Bougies - Spécification relative à l'émission de suie

Le présent document spécifie les exigences et la méthode d’essai permettant d’évaluer l’émission de suie des bougies d’intérieur lors de leur combustion. Elle s’applique aux bougies à une mèche, d’un diamètre inférieur ou égal à 100 mm ou de section équivalente, destinées à être utilisées à l’intérieur.
NOTE Les bougies possédant une mèche d’un diamètre supérieur à 100 mm ou de section équivalente et les bougies à plusieurs mèches ne peuvent pas être évaluées à l’aide de cette méthode d’essai pour des raisons techniques. Pour ces bougies, il est possible de recourir à l’évaluation de l’émission de suie visible.

Sveče - Specifikacija lastnosti saj

Ta evropski standard določa zahteve in preskusno metodo za ocenjevanje lastnosti saj gorečih sveč za notranjo uporabo. Uporablja se za sveče z enojnim stenjem s premerom do 100 mm ali enakovrednim prerezom, namenjene za uporabo v zaprtih prostorih.
OPOMBA:   Sveč z enojnim stenjem s premerom nad 100 mm ali enakovrednim prerezom ter sveč z več stenji zaradi tehničnih razlogov ni mogoče oceniti s to preskusno metodo. Pri teh svečah je mogoča vidna ocena sproščanja saj.

General Information

• Status: Published
• Publication Date: 27-Nov-2018
• Withdrawal Date: 30-May-2019
• ICS: 71.100.99 - Other products of the chemical industry
• Technical Committee: CEN/TC 369 - Project Committee - Candle fire safety
• Drafting Committee: CEN/TC 369 - Project Committee - Candle fire safety
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 15-Oct-2024
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 15426:2019 - Candles - Specification for sooting behaviour

Relations

• Replaces: EN 15426:2007 - Candles - Specification for sooting behaviour
• Effective Date: 08-Jun-2022

Overview

EN 15426:2018 - "Candles - Specification for sooting behaviour" (CEN) defines a standardized test and acceptance criteria to evaluate the sooting behaviour of burning indoor candles. The standard applies to single-wick candles with a diameter up to 100 mm (or equivalent cross‑sectional area). It specifies the test setup, sampling, test conditions and reporting so that manufacturers and test laboratories can quantify soot emissions reliably. The standard supersedes EN 15426:2007 and is maintained by CEN/TC 369.

Key topics and technical requirements

• Scope and limitations
  • Applicable to single‑wick indoor candles ≤ 100 mm diameter.
  • Candles > 100 mm diameter or multiwick candles cannot be assessed using this method; visible soot release may be evaluated separately.
• Acceptance criterion
  • The average soot index per hour from three tests must be less than 1.0/h.
• Test principle
  • Soot emitted by a burning candle is collected on a heat‑resistant glass plate placed inside a wire mesh cylinder; light attenuation through the soiled plate is measured in a measuring chamber to derive a soot index.
• Essential equipment
  • Wire mesh cylinder with adjustable stand (open screening area (60 ± 5) % per ISO 9044), two cylinder sizes for different candle diameters.
  • Measurement unit (light source, light‑reflective chamber, photodiode and indicator instrument). First operation and calibration procedures are given in Annex A.
  • Heat‑resistant glass plates (100 × 100 mm, thickness 3.5–4.5 mm) and calibration disk (neutral density glass).
• Test procedure highlights
  • Minimum of three samples representative of the commercial product.
  • Prepare samples per manufacturer instructions (wick trim, measure dimensions/mass); sample and room temperatures at (20 ± 5) °C, draught‑free environment.
  • Defined stabilizing period, followed by measuring periods; remove the glass plate before extinguishing to avoid afterglow contamination.
  • Additional guidance: selection/setup of wire mesh (Annex C) and hourly fuel consumption calculation (Annex B).
• Reporting
  • Full test conditions, timings, dimensions, temperatures and the soot index results are recorded in the test report.

Applications and who uses it

• Candle manufacturers - product design, quality control and safety verification.
• Independent test laboratories - standardized testing for certification and compliance.
• Retailers and procurement - supplier validation and product safety checks.
• Regulatory bodies and standards organizations - consumer safety assessment and comparative evaluations.
• R&D teams - formulation and wick/design optimization to reduce soot.

Related standards

• ISO 9044:2016 (industrial woven wire cloth requirements referenced for wire mesh).
• EN 15426:2018 replaces EN 15426:2007; consult CEN for national implementations.

Keywords: EN 15426:2018, candles sooting behaviour, soot index, candle testing, indoor candles, wire mesh cylinder, measurement unit, candle safety.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kerzen - Spezifikation für das RußverhaltenBougies - Spécification relative à l'émission de suieCandles - Specification for sooting behaviour97.180Razna oprema za dom in trgovinoMiscellaneous domestic and commercial equipment75.140Voski, bitumni in drugi naftni proizvodiWaxes, bituminous materials and other petroleum productsICS:Ta slovenski standard je istoveten z:EN 15426:2018SIST EN 15426:2019en,fr,de01-februar-2019SIST EN 15426:2019SLOVENSKI
STANDARDSIST EN 15426:20081DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15426
November
t r s z ICS
y sä s r rä { { Supersedes EN
s w v t xã t r r yEnglish Version
Candles æ Specification for sooting behaviour Bougies æ Spßcification relative à l 5ßmission de suie
Kerzen æ Spezifikation für das Rußverhalten This European Standard was approved by CEN on
s w July
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w v t xã t r s z ESIST EN 15426:2019

Measurement unit . 15 A.1 First operation of the measurement unit . 15 A.2 Calibration of the measurement unit . 15 Annex B (informative)
Hourly fuel consumption . 16 Annex C (informative)
Guidance for selection and setup of the wire mesh cylinder . 17 Bibliography . 20 SIST EN 15426:2019

IEC Electropedia: available at http://www.electropedia.org/
ISO Online browsing platform: available at http://www.iso.org/obp 3.1 base material intended fuel source for a candle flame 3.2 candle one or more combustible wicks supported by a material that constitutes a fuel, which is solid or semisolid at room temperature (20 °C to 27 °C) with the main function of sustaining a light-producing flame, including any coatings on and articles or substances in the fuel 3.3 container candle candle that is produced and used in the same container Note 1 to entry: This definition includes tea lights. 3.4 freestanding candle candle that is designed to be used without a supporting holder 3.5 indoor candle candle intended and designed for use inside a house or a building with typical indoor conditions concerning ventilation, draught and temperature Note 1 to entry: An outdoor candle is a candle intended and designed to be used outside buildings in the open air. SIST EN 15426:2019

1) Wire mesh cylinder RMG 2.1 is the trade name of a product supplied by Heil Metalle GmbH, Germany. This information is given for the convenience of the user of this European Standard and does not constitute an endorsement by CEN of the product named. Equivalent products may be used. SIST EN 15426:2019

a) Type 1 b) Type 2 Key 1 wire mesh 2 stand with height adjustment 3 fixture for glass plate Figure 1 — Wire mesh cylinder 5.2 Measurement unit (e.g. RMG 2.12)) consisting of an indication instrument and a measuring chamber. The measuring chamber consists of the light source, fixture for the heat resistant glass plate, a cover with light reflecting interior coating (at least 90 % reflectivity) with a photodiode integrated in it, which is connected with the indication instrument (see Figure 2). NOTE First operation and calibration of the measurement unit refer to Annex A.
2) RMG 2.1 is the trade name of a product supplied by Heil Metalle GmbH, Germany. This information is given for the convenience of the user of this European Standard and does not constitute an endorsement by CEN of the product named. Equivalent products may be used if they can be shown to lead to the same results. SIST EN 15426:2019

Key 1 detector current 2 photometer 3 photo detector 4 baffle 5 soot precipitation 6 heat resistant glass plate 7 light source Figure 2 — Measurement unit 5.3 Heat resistant glass plates, 100 mm × 100 mm, with a thickness of 3,5 mm to 4,5 mm. Each glass plate shall be marked i
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