2014BS EN ISO 12625-7:2014 Tissue paper and tissue products. Determination of optical properties. Measurement of brightness and colour with D65/10 (outdoor daylight)
2007BS EN ISO 12625-7:2007 Tissue paper and tissue products - Determination of optical properties
2000BS EN 12625-7:2000 Tissue paper and tissue products - Part 7 : determination of optical properties