State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring the content of components in gaseous media
Safety of power transformers, power supplies, reactors and similar products. Part 2-2. Particular requirements and tests for control transformers and power supplies incorporating control transformers
Safety requirements for electrical equipment for measurement, control and laboratory use. Part 2-061. Particular requirements for laboratory atomic spectrometer with thermal atomization and ionization
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