Gives guidelines for scintillation detectors nomenclature (identification) and standard dimensions of scintillators. Is applicable to all types of solid organic and inorganic scintillators used in detectors for scintillation counting and spectrometry. The purpose is to facilitate interchangeability of non-encapsulated scintillators and to facilitate comparisons of measurements with encapsulated scintillators. The main change with respect to the previous edition is the addition of the nomenclature.