Paper and board intended to come into contact with foodstuffs. Determination of colour fastness of dyed paper and board Ingestion-build-83346 2) Civil engineering process that

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Paper and board intended to come into contact with foodstuffs. Determination of colour fastness of dyed paper and board Ingestion-build-83346 2) Civil engineering process thatThis 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