The EoS for Pressure-Volume variation at constant temperature used in EosFit7 are:
The parameters used in these EoS, and how we handle linear data, are defined in the section on Eos parameters. Please read that section very carefully, especially if you are a user of EosFit v5.2: things have changed!!!!
From version 7.3, it is possible to refine the EoS directly to moduli data, or to moduli and volume/linear data. If the moduli are adiabatic, see the section Adiabatic-Isothermal moduli for information about how we convert one to another.