1. DIN EN 1232 1997 Workplace atmospheres - Pumps for personal sampling of chemical agents - Requirements and test methods Beuth Verlag Berlin
2. DIN EN 482 1994 Workplace atmospheres - General requirements for the performance of procedures for the measurement of chemical agents Beuth Verlag Berlin
3. DIN 32645 1994 Chemical analysis - Decision limit, detection limit and determination limit under repeatability conditions - Terms, methods, evaluation Beuth Verlag Berlin