The GMS interface to UTCHEM has 8 base species and an unlimited number of additional NAPL phase organic components. Only those components that are checked and included in the Names list will be included in the calculations performed by UTCHEM. GMS does not currently support the Polymer species.
The Define Species dialog can be reached by choosing the General Options command from the UTCHEM menu and then selecting the Define Species button.
Related Links:
General Options
Building a UTCHEM model