All property packages
PSRK (predictive SRK) property package
SRK + MHV1 + UNIFAC (Holderbaum & Gmehling 1991, q₁ = −0.64663) — a fully PREDICTIVE high-pressure package: UNIFAC supplies the activity coefficients from functional groups, so a binary with no regressed parameters still gets real non-ideality. Use when the pair you care about is not in the NRTL tables.