Modular order for the development of mechanical structures for electronic equipment practices. Interface co-ordination dimensions for the 25 mm equipment practice. Dimensions for subracks, chassis, backplanes, front panels and plug-in units
Occupational safety standards system. Respiratory protective devices - Half masks without inhalation valves and with separable filters to protect against gases or gases and particles or particles only. Requirements. Testing. Marking
Plastics. Determination of the ultimate anaerobic biodegradation of plastic materials in controlled slurry digestion systems. Method by measurement of biogas production
Air transport. Safety management system of helicopter activity. Risk management. The standard guides on safety management system for services of airport activity. Main provisions
