Grade a 100% wood pulp:1 substance g/m2 80 + - 2.52 substance variation cd g/m2 equal to/below 43. thickness um 106-1124 thickness difference cd % equal to/below 105 brightness % 100-1026 opacity % equal to/below 907 breaking length average m equal to/above 32008 smoothnessaverage of two sides g 20-25variation of two sides % equal to/below 309 surface absorbing weight g/m2 equal to/below 3010 shrinking variation cd % equal to/below 2.811 folding endrance cd times equal to/more than 1512 dirt (0.2-1.5 mm2) point/m2 equal to/below 65more than.5mm2 013 moisture content % 4.5-6.014 ash % equal to/below 16.015 sizing mm equal to/more than 0.75mmTypes of paper:70/80gsmGrade a brightness 102%Grade b brightness 98%Grade c brightness 95%Grade d brightness 90%