Falsification (smearing) of measured DSC curves is caused by heat conduction phenomena from the DSC and from the sample itself In a previous paper in this series, an algorithm is given to desmear measured heat flow-rate curves on the basis of the theory of linear response. In the case of a sample with low thermal conductivity and small changes of the material properties, the Green’s function can be estimated from the measured curve itself. These conditions are valid for the glass transition process of polymers and one can obtain the Green’s function for desmearing the DSC curves of this process from the glassy state or from the liquid state respectively. But every change of material properties during the thermal event causes an error in the desmearing procedure. This error can be evaluated from a model calculation.