Workplace air. Determination of mercury vapour. Method using gold-amalgam collection and analysis by atomic absorption spectrometry or atomic fluorescence spectrometry
State system for ensuring the uniformity of measurements. Optics and photonics. Interferometric measurement of optical elements and optical systems. Part 2. Measurement and evaluation techniques
Space systems. Non-destructive testing of physics and mechanical properties of space technique's materials and coatings by dynamic indentation. General requirements