A4 matte paper 80 g / m2, 500 l., white A4 paper, white, office, density 80 gr./m. Thickness 104 microns Hardness MD, Mh 125 CD hardness, Mh 55 The roughness of 250 ml/min 146% CIE white ISO D65/10 degree white 105 % White 95 % ISO C/2 ° C Opacity of at least 91 % Surface strength according to Dennison not less than 14 Surface water absorption (Kob60) 25 g/m. The porosity of 800 ml/min Weeds no more than 10 per 1 m2 Humidity 4.6 % Ash content not less than 18 % Dusting during printing-no more than 350 mg/10,000 prints Abrasiveness-max 12 mg Number of sheets per pack 500 A4 sheet size-210 x 297 mm Show More