Tissue paper and tissue products - Determination of optical properties. Measurement of brightness and colour with C/2° (indoor daylight) illuminant Ingestion-build-86103 PD 5500:2015+A3:2017 supersedes PD 5500:2015+A2:2016

PD 5500:2015+A3:2017 supersedes PD 5500:2015+A2:2016

The following subjects are outside the scope of this standard:

BS EN 3832 provides you guidance on required characteristics for double hexagon-headed bolts

This European Standard is applicable only to the use of explosion isolation systems that are intended for avoiding explosion propagation between interconnected enclosures

ISO 18473‑1 specifies requirements and corresponding methods of test for surface-treated nanoscale calcium carbonate in powder form for sealant application

Tissue paper and tissue products - Determination of optical properties. Measurement of brightness and colour with C/2° (indoor daylight) illuminant Ingestion-build-86103 PD 5500:2015+A3:2017 supersedes PD 5500:2015+A2:20161 Scope This part of ISO 12625 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 may be necessary. NOTE The properties called D65 brightness and colour are measured