Pure and Applied Chemistry - Reports and Recommendations for last two yearsPure Appl. Chem., ASAP articlehttp://dx.doi.org/10.1351/PAC-REP-10-07-07Published online 2012-06-04Ute Resch-Genger and Paul C. DeRoseAbstract: Procedures for the characterization of photoluminescence measuring systems are discussed, focusing on spectrofluorometers and fit-for-purpose methods including suitable standards. The aim here is to increase the awareness for the importance of a reliable instrument characterization and to improve the reliability and comparability of measurements of photoluminescence