Tissue paper and tissue products - Determination of optical properties. Measurement of brightness and colour with D65/10° (outdoor daylight) has-hardcopy Net Floor Area (NFA)

Net Floor Area (NFA)

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Interface to external sittings (pits

Text deleted extra test items not included in this standard should be added according to the technical specification requirements

BS 8572:2011 Procurement of facility-related services

Tissue paper and tissue products - Determination of optical properties. Measurement of brightness and colour with D65/10° (outdoor daylight) has-hardcopy Net Floor Area (NFA)1 Scope This part of ISO 12625 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. NOTE The properties called C 2 brightness and colour are