office paper 80g 98 to 103% brightness 75g 98 to 103% brightness 70g 98 to 103% brightness office paperMaterial: 100% wood pulpSubstance: 70/75/80gsmMoisture” 3.5 to 4.5%Whiteness: 98% 100% 102% Thickness: 103 to 110μmSurface roughness TS: 75 to 175ml/minuteSurface roughness BS: 100 to 200ml/minuteBending stiffness MD: >110MnBending stiffness CD: >50MnOpacity: >94%Brightness: 101 to 104%CIE whiteness: 148 to 152Cobb test: 27 to 33g/m2Weighs: 20lbs/75GNo jam in photocopy machineNo double feedStay flat after copyingLeave no dust in the copy-machineNice appearance-white and cleanNice touch-smooth and bulkyNo see through-print both sidesBeen developed for: photocopy machines, laser, ink-jet printers and fax machinesDimensions:International standardA4: 210 x 297mmA3: 420x 297mmAmerica standard:8.5 x 11-inch (216 x 279mm)8.5 x 13-inch (216 x 330mm)Other technical data:A4 size: 8.5 x 11-inch (216 x 279mm)Weight:80g98 to 103% brightness75g98 to 103% brightness70g98 to 103% brightnessPacking: 100% wood pulp 500 sheets/ream 5 reams/carton