diff --git a/src/Backends/REFPROP/REFPROPMixtureBackend.cpp b/src/Backends/REFPROP/REFPROPMixtureBackend.cpp
index ebd93cc9..75fdbcb2 100644
--- a/src/Backends/REFPROP/REFPROPMixtureBackend.cpp
+++ b/src/Backends/REFPROP/REFPROPMixtureBackend.cpp
@@ -612,6 +612,27 @@ CoolPropDbl REFPROPMixtureBackend::calc_Ttriple(){
         return static_cast<CoolPropDbl>(Tmin);
     }
 };
+CoolPropDbl REFPROPMixtureBackend::calc_p_triple(){
+    this->check_loaded_fluid();
+    double p_kPa = _HUGE;
+    try{
+        double rho_mol_L=_HUGE, rhoLmol_L=_HUGE, rhoVmol_L=_HUGE,
+        hmol=_HUGE,emol=_HUGE,smol=_HUGE,cvmol=_HUGE,cpmol=_HUGE,
+        w=_HUGE;
+        long ierr = 0;
+        char herr[errormessagelength+1];
+        long kq = 1;
+        double __T = Ttriple(), __Q = 0;
+        TQFLSHdll(&__T,&__Q,&(mole_fractions[0]),&kq,&p_kPa,&rho_mol_L,
+                  &rhoLmol_L,&rhoVmol_L,&(mole_fractions_liq[0]),&(mole_fractions_vap[0]), // Saturation terms
+                  &emol,&hmol,&smol,&cvmol,&cpmol,&w, // Other thermodynamic terms
+                  &ierr,herr,errormessagelength); // Error terms
+    }
+    catch(...){
+        throw ValueError(format("Unable to calculate triple point pressure"));
+    }
+    return p_kPa*1000;
+};
 CoolPropDbl REFPROPMixtureBackend::calc_dipole_moment(){
     //     subroutine INFO (icomp,wmm,ttrp,tnbpt,tc,pc,Dc,Zc,acf,dip,Rgas)
     //     c
diff --git a/src/Backends/REFPROP/REFPROPMixtureBackend.h b/src/Backends/REFPROP/REFPROPMixtureBackend.h
index 1f06bf7b..1d717e39 100644
--- a/src/Backends/REFPROP/REFPROPMixtureBackend.h
+++ b/src/Backends/REFPROP/REFPROPMixtureBackend.h
@@ -151,6 +151,8 @@ public:
     CoolPropDbl calc_T_critical(void);
 	CoolPropDbl calc_T_reducing(void);
     CoolPropDbl calc_p_critical(void);
+    CoolPropDbl calc_p_triple(void);
+    CoolPropDbl calc_p_min(void){return calc_p_triple();};
     CoolPropDbl calc_rhomolar_critical(void);
 	CoolPropDbl calc_rhomolar_reducing(void);
     CoolPropDbl calc_Ttriple(void);