| | |   Highly Ordered Pyrolytic Graphite. HOPG (Highly Ordered Pyrolytic Graphite) is a particularly pure, crystal-like form of graphite with very smooth hexagonal sheets of carbon atoms.
 Source: Ethan Currens
 Contributor: Theodore Gray
 Acquired: 24 March, 2009
 Text Updated: 24 March, 2009
 Price: Anonymous
 Size: 1"
 Purity: 99.99%
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