STN EN 648
| Označenie: | STN EN 648 |
| Platnosť: | Zrušená |
| Počet strán: | 11 |
| Jazyk: |
EN
|
| Listinná verzia: | 9,70€ |
| Elektronická verzia: |
a) Bez možnosti tlače, prenosu textu a obrázkov:
8,73€ b) Bez možnosti tlače, s prenosom textu a obrázkov: 9,70€ c) S možnosťou tlače, prenosu textu a obrázkov: 12,61€ |
| Slovenský názov: | Papier a lepenka určené na styk s požívatinami. Stanovenie stálosti fluorescenčne zjasneného papiera a lepenky |
| Anglický názov: | Paper and board intended to come into contact with foodstuffs - Determination of the fastness of fluorescent whitened paper and board |
| Dátum vydania: | 01. 05. 2019 |
| Dátum zrušenia: | 01. 12. 2019 |
| ICS: | 67.250, 85.060 |
| Triediaci znak: | 50 7005 |
| Úroveň zapracovania: | idt EN 648:2018 |
| Vestník: | 04/19 |
| Zmeny: | |
| Nahradzujúce normy: | STN EN 648:2019-12 (50 7005) |
| Nahradené normy: | STN EN 648:2007-03 (50 7005) |
| Poznámka vo Vestníku: | Rozpracovaná aj prekladom. |
| Predmet normy: | 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. |