Letër për peceta dhe produktet e saj - Pjesa 7: Përcaktimi i vetive optike - Matja e shkëlqimit dhe ngjyrës me anë të D65/10° (jashtë në ambjent në dritë natyrore) (ISO 12625-7:2014)
Tissue paper and tissue products - Part 7: Determination of optical properties - Measurement of brightness and colour with D65/10° (outdoor daylight) (ISO 12625-7:2014)
ISO 12625-7:2014 specifies testing procedures for the instrumental determination of brightness and colour of tissue paper and tissue products viewed under outdoor 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 may be necessary.
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