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Standard
ISO 12625-16
Second edition
Tissue paper and tissue products —
2024-05
Part 16:
Determination of optical properties
— Diffuse reflectance method for
opacity (paper backing)
Papier tissue et produits tissue —
Partie 16: Détermination des propriétés optiques — Méthode par
réflectance diffuse de l'opacité sur fond papier
Reference number
ISO 12625-16:2024(en) © ISO 2024
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ISO 12625-16:2024(en)
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Published in Switzerland
© ISO 2024 – All rights reserved
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ISO 12625-16:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 3
5.1 Reflectometer .3
5.2 Reference standards .3
5.3 Working standards .3
5.4 Black cavity . .3
6 Sampling . 3
7 Conditioning . 4
8 Preparation of test pieces . 4
9 Procedure . 4
10 Calculation . 5
11 Test report .
...