Tissue paper and tissue products - Part 16: Determination of optical properties - Opacity (paper backing) - Diffuse reflectance method (ISO 12625-16:2015)
This part of ISO 12625 specifies the testing procedures for the instrumental determination of the opacity
of tissue paper or tissue products by diffuse reflectance using a paper backing.
This part of ISO 12625 contains specific instructions for the preparation of test pieces of single-ply and
multi-ply products, where special preparation/procedures might be necessary.
It can be used to determine the opacity of tissue paper and tissue products containing fluorescent
whitening agents, provided the UV content of the radiation incident on the test piece has been adjusted to
conform to that in the CIE illuminant C using a fluorescent reference standard provided by an authorized
laboratory as described in ISO 2470-1.
This part of ISO 12625 is not applicable to coloured tissue paper and tissue products which incorporate
fluorescent dyes or pigments.
ΚΩΔΙΚΟΣ ΠΡΟΪΟΝΤΟΣ:
CYS EN ISO 12625-16:2015
This part of ISO 12625 specifies the testing procedures for the instrumental determination of the opacity
of tissue paper or tissue products by diffuse reflectance using a paper backing.
This part of ISO 12625 contains specific instructions for the preparation of test pieces of single-ply and
multi-ply products, where special preparation/procedures might be necessary.
It can be used to determine the opacity of tissue paper and tissue products containing fluorescent
whitening agents, provided the UV content of the radiation incident on the test piece has been adjusted to
conform to that in the CIE illuminant C using a fluorescent reference standard provided by an authorized
laboratory as described in ISO 2470-1.
This part of ISO 12625 is not applicable to coloured tissue paper and tissue products which incorporate
fluorescent dyes or pigments.
