Technical specification Characteristic Test Method Basis weight (g/m2) 80 International Size A3 (297 x 420mm.) CIE Whiteness 148-152 Whiteness 102-104%, Natural White Thickness 103-110 um Surface roughness TS ml/min 75-175 Surface roughness BS ml/min 100-200 Bending stiffness MD >110 Mn Bending stiffness CD >50 Mn Cobb Test >27-33 g/m2 27-33 Characteristic Test Method Basis weight (g/m2) 80 International Size F14 (216 x 356mm.) CIE Whiteness 148-152 Whiteness 102-104%, Natural White Thickness 103-110 um Surface roughness TS ml/min 75-175 Surface roughness BS ml/min 100-200 Bending stiffness MD >110 Mn Bending stiffness CD >50 Mn Cobb Test >27-33 g/m2 27-33