Fibrous cellulose layers are available as POLYGRAM® polyester sheets.

• Alternative selectivity to silica 60
• Fiber length (95%) 2 to 20 μm
• Average degree of polymerization 400 to 500
• Specific surface according to Blaine 15000 cm²/g
• ≤20 ppm Fe, 6 ppm Cu, 7 ppm P
• Dichloromethane extract ≤0.25%
• Residue on ignition at 850 °C ≤1500 ppm

They are used in partition chromatography of polar substances such as for the separations of amino acids, carboxylic acids or carbohydrates.