ISO 12625-16:2024

Tissue paper and tissue products — Part 16: Determination of optical properties — Diffuse reflectance method for opacity (paper backing)

Publication date:   May 3, 2024

General information

60.60 Standard published   May 3, 2024

ISO

ISO/TC 6/SC 2 Test methods and quality specifications for paper and board

International Standard

85.080.20   Tissue paper

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Scope

This document specifies the testing procedures for the instrumental determination of the opacity of tissue paper or tissue products by diffuse reflectance using a paper backing.
This document contains specific instructions for the preparation of test pieces of single-ply and multi-ply products, where special preparation/procedures might be necessary.
It can be used to determine the opacity of tissue paper and tissue products containing fluorescent whitening agents, provided the UV content of the radiation incident on the test piece has been adjusted to conform to that in the CIE illuminant C using a fluorescent reference standard provided by an authorized laboratory as described in ISO 2470-1.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 12625-16:2015

NOW

PUBLISHED
ISO 12625-16:2024
60.60 Standard published
May 3, 2024