Paper and board intended to come into contact with foodstuffs - Determination of the fastness of fluorescent whitened paper and board

This document describes procedures for the testing of the fastness of fluorescent whitened paper and board intended to come into contact with foodstuffs. Some procedures depending on the foreseeable use of the material are given.
Visual absence of the glass fibre paper’s fluorescence under UV light is evaluated.
For samples having significant different sides, a migration can occur from one glass fibre to the other and could lead to wrong interpretation of the fastness of one side. It is advisable to check these samples using large sampling procedure to prevent cross contamination of the glass fibre during the migration procedure. The procedure is described in Annex A. If lower limit of detection is required, this procedure can also be used.

Papier und Pappe vorgesehen für den Kontakt mit Lebensmitteln - Bestimmung der Farbechtheit von optisch aufgehelltem Papier und Pappe

Dieses Dokument legt ein Verfahren zur Prüfung der Farbechtheit von optisch aufgehelltem Papier und Pappe, die für den Kontakt mit Lebensmitteln bestimmt sind, fest. Es werden verschiedene Varianten angegeben, je nach vorhersehbarer Nutzung des vorhandenen Werkstoffs.
Die visuelle Abwesenheit der Fluoreszenz des Glasfaserpapiers unter UV-Licht wird bewertet.
Bei Proben mit wesentlich unterschiedlichen Seiten kann es zu einer Migration von einer Glasfaser zur anderen kommen, was wiederum zur falschen Interpretation der Farbechtheit auf einer Seite führen könnte. Es ist empfehlenswert, diese Proben im großen Probenahmeverfahren zu prüfen, um eine Querkontamination der Glasfasern während des Migrationsvorgangs zu vermeiden. Das Verfahren ist in Anhang A beschrieben. Wenn niedrigere Nachweisgrenzen gefordert sind, kann dieses Verfahren ebenfalls zur Anwendung kommen.

Papier et carton destinés à entrer en contact avec les denrées alimentaires - Détermination de la solidité du papier et du carton blanchis par des agents d’azurage fluorescents

Le présent document décrit les modes opératoires d’essai pour déterminer la solidité du papier et du carton destinés à entrer en contact avec les denrées alimentaires, blanchis par des agents d’azurage fluorescents. Plusieurs modes opératoires selon l’utilisation prévisible du matériau sont décrits.
Un examen visuel à la lumière ultraviolette permet d’évaluer l’absence de fluorescence du papier en fibres de verre.
Pour les échantillons dont les faces sont sensiblement différentes, une migration peut se produire d’une fibre de verre à l’autre et peut conduire à une mauvaise interprétation de la solidité d’une face. Il est recommandé de vérifier ces échantillons à l’aide d’un mode opératoire d’échantillonnage utilisant des échantillons de grande taille afin d’empêcher la contamination croisée de la fibre de verre au cours de la procédure de migration. Le mode opératoire est décrit à l’Annexe A. Si une limite de détection inférieure est requise, ce mode opératoire peut également être utilisé.

Papir, karton in lepenka, namenjeni za stik z živili - Ugotavljanje svetlobne obstojnosti papirja, kartona in lepenke, ki vsebujejo optična belila

Ta dokument opisuje postopke za preskušanje obstojnosti fluorescentnega beljenega papirja in kartona, namenjenega za stik z živili. Podani so nekateri postopki, odvisni od predvidene uporabe materiala. Oceniti je treba vidno odsotnost fluorescence pod UV-žarki. OPOMBA: Pri vzorcih, katerih strani se precej razlikujejo, lahko pride do prehajanja iz enega steklenega vlakna v drugega, kar lahko privede do napačnega prepoznavanja obstojnosti ene strani. Te vzorce je treba pregledati s postopkom velikega vzorčenja, da se prepreči navzkrižna kontaminacija steklenih vlaken med postopkom prehajanja. Postopek je opisan v dodatku A. Če je potrebna spodnja meja zaznavanja, se lahko uporabi tudi ta postopek.

General Information

Status
Published
Publication Date
20-Nov-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
21-Nov-2018
Completion Date
21-Nov-2018

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SLOVENSKI STANDARD
SIST EN 648:2019
01-januar-2019
1DGRPHãþD
SIST EN 648:2007
3DSLUNDUWRQLQOHSHQNDQDPHQMHQL]DVWLN]åLYLOL8JRWDYOMDQMHVYHWOREQH
REVWRMQRVWLSDSLUMDNDUWRQDLQOHSHQNHNLYVHEXMHMRRSWLþQDEHOLOD

Paper and board intended to come into contact with foodstuffs - Determination of the

fastness of fluorescent whitened paper and board
Papier und Pappe vorgesehen für den Kontakt mit Lebensmitteln - Bestimmung der
Farbechtheit von optisch aufgehelltem Papier und Pappe
Papier et carton destinés à entrer en contact avec les denrées alimentaires -

Détermination de la solidité du papier et du carton blanchis par des agents d'azurage

fluorescents
Ta slovenski standard je istoveten z: EN 648:2018
ICS:
67.250 Materiali in predmeti v stiku z Materials and articles in
živili contact with foodstuffs
85.060 Papir, karton in lepenka Paper and board
SIST EN 648:2019 en,fr,de

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

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SIST EN 648:2019
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SIST EN 648:2019
EN 648
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2018
EUROPÄISCHE NORM
ICS 67.250; 85.060 Supersedes EN 648:2006
English Version
Paper and board intended to come into contact with
foodstuffs - Determination of the fastness of fluorescent
whitened paper and board

Papier et carton destinés à entrer en contact avec les Papier und Pappe vorgesehen für den Kontakt mit

denrées alimentaires - Détermination de la solidité du Lebensmitteln - Bestimmung der Farbechtheit von

papier et du carton blanchis par des agents d'azurage optisch aufgehelltem Papier und Pappe

fluorescents
This European Standard was approved by CEN on 22 July 2018.

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, Serbia, 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: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 648:2018 E

worldwide for CEN national Members.
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SIST EN 648:2019
EN 648:2018 (E)
Contents Page

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

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 4

4 Principle ............................................................................................................................................................. 4

5 Materials and equipment ............................................................................................................................. 5

6 Reagents ............................................................................................................................................................. 5

7 Sampling ............................................................................................................................................................. 6

8 Preparation of sample ................................................................................................................................... 6

9 Procedure........................................................................................................................................................... 6

10 Test conditions ................................................................................................................................................. 7

11 Comparison papers ........................................................................................................................................ 7

11.1 Solutions for comparison papers .............................................................................................................. 7

11.2 Preparation of fluorescent whitened comparison papers ............................................................... 7

12 Evaluation .......................................................................................................................................................... 8

13 Test report ......................................................................................................................................................... 8

Annex A (informative) Determination of the fastness of fluorescent whitened paper and

board on large samples ................................................................................................................................. 9

A.1 Scope .................................................................................................................................................................... 9

A.2 Preparation of large samples ...................................................................................................................... 9

A.3 Test report ......................................................................................................................................................... 9

Bibliography ................................................................................................................................................................. 10

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SIST EN 648:2019
EN 648:2018 (E)
European foreword

This document (EN 648:2018) has been prepared by Technical Committee CEN/TC 172 “Pulp, paper

and board”, 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 May 2019, and conflicting national standards shall be

withdrawn at the latest by May 2019.

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 648:2006.
With regard to EN 648:2006 the following changes have been made:
a) Clause 1 “Scope” has been revised and extended;

b) in Clause 6 “Reagents” the test fluid “saliva simulant ” has been removed and the test fluid “alkaline

salt solution” has been introduced;
c) new test conditions, matching the use of the tested papers and boards;
d) new definition for the glass fibre paper;
e) editorial changes.

Attention shall be drawn to the fact that the glass fibre papers have not been duly validated before the

publication of this standard.

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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
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SIST EN 648:2019
EN 648:2018 (E)
1 Scope

This document describes procedures for the testing of the fastness of fluorescent whitened paper and

board intended to come into contact with foodstuffs. Some procedures depending on the foreseeable

use of the material are given.

Visual absence of the glass fibre paper’s fluorescence under UV light is evaluated.

For samples having significant different sides, a migration can occur from one glass fibre to the other

and could lead to wrong interpretation of the fastness of one side. It is advisable to check these samples

using large sampling procedure to prevent cross contamination of the glass fibre during the migration

procedure. The procedure is described in Annex A. If lower limit of detection is required, this procedure

can also be used.
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 ISO 186, Paper and board - Sampling to determine average quality (ISO 186)

EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696)

ISO 6588-2, Paper, board and pulps - Determination of pH of aqueous extracts – Part 2: Hot extraction

3 Terms and definitions
For the purposes of this document, the following term and definition applies.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
fastness

ineffective transfer of fluorescent whitening agent from paper, to a glass fibre paper saturated with a

test fluid and evaluated visually under UV-light against a series of comparison papers

4 Principle

A sample is brought into contact with glass fibre papers which have been saturated with a test fluid and

placed under load for a given time. The stai
...

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