It is easy to extract substances from the plastic layer. Simply cut out the sample area and place into suitable solvent. This eliminates the dust of the scraping step and is often important in studies with radioactive materials.

     Plastic backed plates can also be used for electrophoresis work. The backing is polyester platic. Activate sheets at 65-70?C for 30min.

     S-GH, Silica plates contain a special inorganic Hard-layer plus gypsum binder that stabilizes the layer to make it more abrasion resistant. They provide improved handling. They are also 100% water resistant and are compatible with aqueous developing solvent. They are recommended for all applications including those where visualization occurs through strong charring procedures or in any case in which reagent interaction with an organic binder occurs.

     ALN-G, Alumina TLC plates are neutral aluminium oxide containing calcium sulfate hemihydrate as a binder. These TLC plates are recommended for terpenes, alkaloids, steroids, aliphatic and aromatic compounds. Activated plates at 120?C for 10min before use for improved separations.

     MC, Microcrystalline Cellulose plates are coated with Microcrystalline Cellulose (Avicel?). The adsorbent consists of regenerated alpha cellulose particles of nearly spherical shape and 50?m particle size. Layer are binder free and abrasion resistant. Compounds separated on this cellulose tend to form more compact spots than on fibrous cellulose layers. Recommended for carboxilic acids, lower alcohols, urea and purine derivatives.

     MC-PEI, Cellulose with polyethyleneimine plates are cellulose anion-exchanger. Recommended for analysis of nucleic acids, and of mutagenic substances with the 32P postlabelling procedure.

     S-C18-G plates are C18 bonded-silca containing Gypsum or Calcium Sulfate hemihydrate as a binder. They are used to separated both polar and non-polar compounds by adjusting the solvent system