Among the scientific libraries in Germany, special libraries represent the largest and simultaneously the most heterogeneous group. The implementation of existing quality management systems is generally hardly feasible for the mostly very small libraries. The author presents in this publication the possibilities that still exist for these libraries to take advantage of the benefits that quality management offers. Two elements of quality management are highlighted: one, performance measurement, can be considered a central prerequisite for demonstrating quality, while the other, benchmarking, serves to comparatively assess the measured performance, thereby creating the foundation for achieving improvements through learning from others. An overview of the fundamental concepts of quality management in the first chapter of the book provides orientation within this complex topic, with particular consideration of the needs of special libraries.