ISO 12625-16:2015
Tissue paper and tissue products - Part 16: Determination of optical properties - Opacity (paper backing) - Diffuse reflectance method

Standard No.

ISO 12625-16:2015

Release Date

2015

Published By

International Organization for Standardization (ISO)

Latest

ISO 12625-16:2015

Scope

This part of ISO 12625 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 part of ISO 12625 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. This part of ISO 12625 is not applicable to coloured tissue paper and tissue products which incorporate fluorescent dyes or pigments.

ISO 12625-16:2015 Referenced Document

• ASTM E308-13 Standard Practice for Computing the Colors of Objects by Using the CIE System*， 2024-04-20 Update
• ISO 11664-1:2007 Colorimetry - Part 1: CIE standard colorimetric observers
• ISO 11664-2:2007 Colorimetry - Part 2: CIE standard illuminants
• ISO 12625-15:2015 Tissue paper and tissue products - Part 15: Determination of optical properties - Measurement of brightness and colour with C/2° (indoor daylight) illuminant
• ISO 12625-7:2014 Tissue paper and tissue products - Part 7: Determination of optical properties - Measurement of brightness and colour with D65/10° (outdoor daylight)
• ISO 186:2002 Paper and board - Sampling to determine average quality
• ISO 187:1990 Paper, board and pulps; standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples
• ISO 2469:2014 Paper, board and pulps - Measurement of diffuse radiance factor (diffuse reflectance factor)
• ISO 2470-1:2009 Paper, board and pulps - Measurement of diffuse blue reflectance factor - Part 1: Indoor daylight conditions (ISO brightness)
• ISO 2471:2008 Paper and board - Determination of opacity (paper backing) - Diffuse reflectance method
• ISO 4094:2005 Paper, board and pulps - International calibration of testing apparatus - Nomination and acceptance of standardizing and authorized laboratories
• ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results - Part 1: General principles and definitions
• ISO/TR 24498:2006 Paper, board and pulps - Estimation of uncertainty for test methods

ISO 12625-16:2015 history

• 2015 ISO 12625-16:2015 Tissue paper and tissue products - Part 16: Determination of optical properties - Opacity (paper backing) - Diffuse reflectance method