Tissue papíry a tissue výrobky - Část 15: Stanovení optických vlastností - Měření jasu a barvy pomocí C/2° (vnitřní denní světlo) iluminantu (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.4.2023
Designation standards: ČSN EN ISO 12625-15
Classification mark: 500371
Catalog number: 516555
Publication date standards: 1.4.2023
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN
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