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Electric equipment for explosive atmospheres. Part 11. Equipment protection by intrinsic safety 'i'
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Specification for radio disturbance and immunity measuring apparatus and methods. Part 2-1. Methods of measurement of disturbances and immunity. Conducted disturbance measurements
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Measuring relays and protection equipment. Part 27. Product safety requirements
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Microbiology of food, animal feed and water. Preparation, production, storage and performance testing of culture media
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