Cellulose adsorbents for column chromatography Features Cellulose MN 100: native fibrous cellulose Standard grade Average degree of polymerization 620-;680 Fiber length (85 %) 20-;100 ?m Specific surface acc. to Blaine ~ 6500 cm2/g Residue on ignition 10000 ppm, 20 ppm Fe, 5 ppm Cu, 7 ppm P, dichloromethane extract 0.20 % Cellulose MN 2100: native fibrous cellulose Purified grade (washed with different eluents) Average degree of polymerization 620-;680 Fiber length (85 %) 20-;75 ?m Specific surface acc. to Blaine ~ 5500 cm2/g Residue on ignition 1000 ppm, 2 ppm Fe, 1 ppm Cu, 2 ppm P, dichloromethane extract 0.15 % Grade MN 2100ff is a defatted cellulose MN 2100 with a dichloromethane extract 0.02 %