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Photographic gelatine. Method of determination of viscosity and viscosity decrease

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Protection circuits from dangerous voltages and currents arising at lines of wire broadcasting. General requirements and rules

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Adjusting fixturing hexahedral supports with headed end and hole. Design and dimensions

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Irradiated aerophotographic films. Method of chemical photographic processing

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Electromagnetic compatibility of technical equipment. Electrical equipment for measurement, control and laboratory use. Part 2-2. Particular requirements for portable test, measuring and monitoring equipment used in low-voltage distribution systems. Test configurations, operational conditions and performance criteria

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Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz. Part 2-2. Immunity requirements for mains communications equipment and systems operating in the range of frequencies 95 kHz to 148,5 kHz and intended for use in industrial environments

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