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Cellulose is an organic sorbent that is particularly suitable for the separation of hydrophilic substances by partition chromatography. EMD Millipore's cellulose plates include classical TLC or HPTLC plates for demanding high-performance separations. Classical TLC cellulose layers are based on a microcrystalline cellulose for standard separations, while the HPTLC cellulose layers utilize high-purity rod-shaped microcrystalline cellulose resulting in highly reduced diffusion of analytes for critical high-performance separations. Celluloses plates are available with or without fluorescent indicator. The fluorescent indicator used is a special fluorescent pigment that is stimulated to intense blue fluorescent remission under long-wave UV light of 366 nm and under short-wave UV light of 254 nm.