Russian standards PDF

Phthalic anhydride for industrial use. Methods for the determination of phthalic acid

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Marking instrument. Compasses. Types and main dimensions

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Feed phosphates. General requirements for analysis methods

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Feed phosphates. Method for determination of hydrogen ions activity value

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Switching and connecting components, and electrical connectors. Methods of measurement of contact resistance, and dynamic and static instability of contact transient resistance

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Optoelectronic integrated microcircuits and opto couplers. Method for measuring switching times

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