Liquid-liquid equilibrium data of ethyl lactate and poly(lactic acid) binary mixtures were measured at 0.1 MPa nominal pressure in the temperature range from (260 to 265) K. Cloud-point temperatures were measured using a dynamic method with visual detection of phase transitions (naked-eye determination of turbidity). This system exhibits an upper critical solution temperature (UCST) at T-c = 265.1 K and w(PLA,c) = 0.03776. The experimental data were modeled with the PC-SAFT equation of state, and new parameters for both compounds within the PC-SAFT frame are provided. The model correlates well with the observed experimental data.