Paper and board intended to come into contact with foodstuffs. Determination of colour fastness of dyed paper and board

Paper and board intended to come into contact with foodstuffs. Determination of colour fastness of dyed paper and board

Regular price
£142.00
Sale price
£142.00
Regular price
£71.00
Sold out
Unit price
per 

This document describes procedures for the testing of dyed paper and board intended to come into contact with foodstuffs. Two procedures are given. Procedure A for contact of long duration (e. g. food packaging) and procedure B for contact of short duration (e. g. napkins, kitchen papers, household papers).

Visual evaluation against a blank is used only in order to detect any bleeding (yes/no) while evaluation against a grey scale provides grading of the bleeding.