State system for ensuring the uniformity of measurements. State verification scheme for measuring instruments of the water solutions ion content by electrochemical methods (pX measuring instruments)
Medical laboratory technologies. Requirements for quality of clinical laboratory tests. Part 1. Quality management regulations of clinical laboratory tests
The best available techniques. Guidelines for the submission of information on the best available techniques in the information and technical reference document on the best available techniques
Household and similar electrical appliances. Safety. Part 2-91. Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers
