The importance of uniform terminology and standardised chemical calibration and test processes for titration microcalorimetry are discussed. Calorimeters are normally calibrated electrically, but in the case of microcalorimeters, results from such calibration experiments can easily lead to significant systematic errors. The quality of results will often improve if a chemical calibration technique is used. In order to test the properties of a calorimeter and to validate the results, it is important to have available suitable test reactions. References are given to some standardised chemical calibration and test processes for titration microcalorimetry.