Dentistry. Essential characteristics of test methods for the evaluation of treatment methods intended to improve or maintain the microbiological quality of dental unit procedural water— 18 стр.
Protection against pollution of potable water installations and general requirements of devices to prevent pollution by backflow; German version EN 1717:2000; Technical rule of the DVGW— 53 стр.
Medical devices - Application of risk management to medical devices (ISO 14971:2007, Corrected version 2007-10-01); German version EN ISO 14971:2012— 112 стр.