- Substance G/M2 80 + - 2.5 - Substance Variation Cd G/M2 Equal To/Below 4 - Thickness Um 106-112 - Thickness Difference Cd % Equal To/Below 10 - Brightness % 100-102 - Opacity % Equal To/Below 90 - Breaking Length Average M Equal To/Above 3200 8 Smoothness Average Of Two Sides G 20-25 Variation Of Two Sides % Equal To/Below 30 - Surface Absorbing Weight G/M2 Equal To/Below 30 - Shrinking Variation Cd % Equal To/Below 2.8 - Folding Endurance Cd Times Equal To/More Than 15 - Dirt (0.2-1.5 Mm2) Point/M2 Equal To/Below 65 More Than. 5Mm2 0 - Moisture Content % 4.5-6.0 - Ash % Equal To/Below 16.0 - Sizing Mm Equal To/More Than 0.75Mm - Substance :80G/M2 - Brightness : 102=104% - Whiteness : Cie 167