2019DIN EN 648:2019-02 Paper and board intended to come into contact with foodstuffs - Determination of the fastness of fluorescent whitened paper and board; German version EN 648:2018
2019DIN EN 648:2019 Paper and board intended to come into contact with foodstuffs - Determination of the fastness of fluorescent whitened paper and board
2006DIN EN 648:2006 Paper and board intended to come into contact with foodstuffs - Determination of the fastness of fluorescent whitened paper and board; German version EN 648:2006