PONA

A breakdown of the kind of molecules which compose a hydrocarbon mixture. The trade uses PONA most frequently to describe naphthas. See paraffins, olefins, naphthenes, and aromatics. All hydrocarbons fall into one of these four categories. The feedstock trade characterizes naphthas by what percentage of each kind of molecule they contain. A PONA test determines the composition of a particular cargo or stream.