SIST EN 648:2007

SLOVENSKI STANDARD
SIST EN 648:2007
01-januar-2007
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SIST EN 648:2003
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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 a 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 648:2006
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 648:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 648
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2006
ICS 67.250; 85.060 Supersedes EN 648:2003
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 optisch
papier et du carton blanchis par des agents d'azurage aufgehelltem Papier und Pappe
fluorescents
This European Standard was approved by CEN on 24 August 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 648:2006: E
worldwide for CEN national Members.

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EN 648:2006 (E)
Contents Page
Foreword.3
1 Scope.4
2 Normative references.4
3 Terms and definitions .4
4 Principle.4
5 Materials and equipment.4
6 Reagents.5
7 Sampling.6
8 Preparation of sample .6
9 Procedure A (long duration contact) .6
10 Procedure B (short time contact).6
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

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EN 648:2006 (E)
Foreword
This document (EN 648:2006) 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 March 2007, and conflicting national standards shall be withdrawn at
the latest by March 2007.
This document supersedes EN 648:2003.
With regard to EN 648:2003 the following changes has been made:
a) the test fluid "sodium carbonate solution" has been omitted and the test fluid "saliva stimulant" has
been introduced to cover a demand.
b) editorial changes
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.
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EN 648:2006 (E)
1 Scope
This document specifies procedures for the testing of the fastness of fluorescent whitened paper and board
intended to come into contact with foodstuffs. Two procedures are given, procedure A for contact of long
duration (e. g. food packaging) and procedure B, for contact of short duration (e. g. napkins, kitchen papers,
household papers).
2 Normative references
The following referenced documents are indispensable for the application 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 186:2002)
ISO 8787, Paper and board — Determination of capillary rise — Klemm method
3 Terms and definitions
For the purposes of this document, the following term and definition applies.
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 staining of the glass fibre paper is evaluated by comparison with a series of
fluorescent whitened comparison papers. The test fluids used are distilled or deionised water, dilute acetic
acid, saliva simulant and olive oil depending on the type of food contact expected.
5 Materials and equipment
5.1 Unstained glass fibre papers of 60 mm × 90 mm. The glass fibre papers shall meet the following
conditions:
a) grammage of 70 g/m²;
b) capillary rise of 190 mm to 210 mm in 10 min in accordance with ISO 8787;
c) free from fluorescent whitening and wet strength agents;
d) free from cellulosic fibres.
5.2 Glass fibre papers with a diameter of 30 mm. The glass fibre papers shall meet the same conditions as
in 5.1.
5.3 Watch glass dish with a diameter of 40 mm.
5.4 Glass plates, 60 mm × 90 mm.
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EN 648:2006 (E)
5.5 Polyethylene film, uncoloured and transparent.
5.6 Weight having a mass of 1 kg.
5.7 UV lamp giving UV-A (365 nm).
6 Reagents
6.1 Fluorescent whitening agents (FWAs) with Constitution No. 40622 in accordance with Colour Index II,
1956 Edition (The Society of Dyers & Colorists, P.O. Box 244, Perkin House, 82 Grattan Road, Bradford
...