TONSIL® filter powder is produced from bentonite then enhanced by an acid process producing very fine clay with highly absorbent properties. Typically, TONSIL® is used in combination with diatomaceous earth (Hyflo Super Cel). Both compounds are placed on a typical nylon spin disk filter. TONSIL can absorb dyes, water soluble soils, solvent soluble soil, moisture and fatty acids from the solvent. TONSIL® also exhibits an inhibiting property for reducing or eliminating corrosion.