Tissue paper and tissue products — Part 15: Determination of optical properties — Measurement of brightness and colour with C/2° (indoor daylight) illuminant
Tissue paper and tissue products — Part 15: Determination of optical properties — Measurement of brightness and colour with C/2° (indoor daylight) illuminant
This document specifies testing procedures for the instrumental determination of brightness and colour of tissue paper and tissue products viewed in indoor daylight conditions. It also gives specific instructions for the preparation of test pieces (single-ply, multi-ply products) and for the optical measurements of products, where special precautions can be necessary. NOTE The properties called D65 brightness and colour are measured with an instrument adjusted to a much higher UV content than that specified in this document.
ISO 12625-15:2022 - Tissue paper and tissue products - Part 15: Determination of optical properties - Measurement of brightness and colour with C/2° (indoor daylight) illuminant - specifies instrumental test procedures for measuring the optical appearance of tissue paper under indoor daylight (C/2°) conditions. The standard covers preparation of test pieces (single‑ply and multi‑ply), required apparatus and calibration, measurement of ISO brightness and C/2° colour (CIELAB L, a, b*)**, calculation of results, and reporting requirements. This is the second edition (2022), replacing the 2015 edition.
Стандарты, упомянутые в описании
Keywords: ISO 12625-15:2022, tissue paper, brightness measurement, C/2° illuminant, ISO brightness, CIELAB colour, reflectometer, spectrophotometer, optical properties.