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BS EN 646:2018 – TC:2020 Edition

BS EN 646:2018 – TC:2020 Edition

$112.35

Tracked Changes. Paper and board intended to come into contact with foodstuffs. Determination of colour fastness of dyed paper and board

Published By Publication Date Number of Pages
BSI 2020 27
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This document describes procedures for the testing of dyed paper and board intended to come into contact with foodstuffs. Some procedures depending on the foreseeable use of the material are given. Visual evaluation against a grey scale provides grading of the bleeding. 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 could also be used.

PDF Catalog

PDF Pages PDF Title
17 National foreword
20 European foreword
21 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Materials and equipment
22 5.7 Kettle.
6 Reagents
7 Sampling
8 Preparation of sample
9 Procedure
23 10 Test conditions
11 Evaluation
24 12 Test report
25 Annex A (informative) Determination of the fastness of fluorescent whitened paper and board on large samples
26 Bibliography

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BS EN 646:2018 - TC
$112.35