specifications copy a4 paper : Description Data Value Unit Basis Weight 80 + 4 % (max) Gsm Thickness 0.100 - 0.115 mm Tensile Strength MD 4.00 - 5.00 kg / 15 mm Tensile Strength CD 2.50 - 3.50 kg / 15 mm Tear Resistance MD 45 - 55 gf Tear Resistance CD 50 - 60 gf Brightness (white only) 98 (min) % ISO Colour Shade L 92.00 - 94.00 - Colour Shade a 2.00 - 2.70 - Colour Shade b -9.00 - (-10.00) - Opacity 90 (min) % Cobb test 20 - 30 g/m² Stiffness MD 9.00 - 12.00 gf.cm Stiffness CD 5.00 -9.00 gf.cm Moisture Content 4.00 - 6.00 %