Fibrous cellulose impregnated with polyethyleneimine available as POLYGRAM® polyester sheets with or without fluorescent indicator. They are used in analysis of nucleic acids and of mutagenic substances with the ³²P post labelling procedure.

• Ion exchange layer for TLC

Base material: Celluolse MN 300: Fibre length (95%) 2 to 20 μmg; average degree of polymerisation 400 to 500; specific surface acc. to Blaine 15000 cm²/g.

Impregnation: Polyethyleneimine (PEI).