Textiles. Quantitative chemical analysis. Part 6. Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method using formic acid and zinc chloride)
Medical electrical equipment. Part 2-22. Particular requirements for basic safety and essential performance of surgical, cosmetic, therapeutic and diagnostic laser equipment
Electromagnetic compatibility of technical equipment. Railway systems and equipment. Part 5. Emission and immunity of fixed power supply installations and apparatus. Requirements and test methods