Product Description Activated Alumina also known as aluminum oxide is one of the most adaptable sorbents for preparative flash and column chromatography.  NSF 61 certified & Made in USA, Purity: <=100%. Based on 8% loss on Ignition.  Purification of natural products & herbalsAs a supportive agent in aromatice chromatography Dehydration of organic solvents.Dehydration of organic solvents.Removal of water from non-polar solventsNSF 61 Certified: Guaranteed the product is free of harmful chemicals, and can be used in systems that humans come into contact consuming. Lot certificates can be available per request.      .