Graphene is a monolayer platelet (flake) of graphite available through either a mechanical cleaving of HOPG (highly oriented pyrolytic graphite) sample using deposition of hexagonal carbon layer from vapors (i.e. CVD). Graphene platelets (flakes) have a form of stacks of up to 10 graphene monolayers. Their size may range from a few nanometers to a dozen micrometers while the interlayer distance ranges from 0.35 to 0.40 nm. Such graphene platelets are being manufactured from powdered graphite. ProChimia offers very well characterized graphene derivatives.