A method and apparatus of differential scanning calorimetry comprises: during the heating and/or cooling determining at least one of a temperature and a temperature change of the sample and of the reference; controlling a heating and/or cooling power to the sample and/or the reference on the basis of a difference in the temperature and/or the temperature change relative to a predetermined temperature and/or temperature change and/or on the basis of a difference in the temperature and/or the temperature change between the sample and the reference; determining at least one thermodynamic property of the sample and/or a composition of the sample on the basis of at least one of temperature of the sample, temperature change of the sample and heating and/or cooling power to the sample, relative to at least one of temperature of the reference, temperature change of the reference and heating and/or cooling power to the reference.