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NEPLATNÁ vydaná dňa 1.1.1977

Method of the determination for the water insoluble matter content of sodium ferrocyanide

NEPLATNÁ vydaná dňa 13.8.1986

Method of the determination for the aqueous content of sodium ferrocyanide

NEPLATNÁ vydaná dňa 13.8.1986

Determination of silicon in graphite products of high purity by silicon-molybdenum blue photometric method

NEPLATNÁ vydaná dňa 1.1.1986

Determination of iron in graphite products of high purity by ortho-phenanthroline photometric method

NEPLATNÁ vydaná dňa 1.1.1986

Determination of trace boron in graphite products of high purity by spectroscopical method--The solution and dry residue method

NEPLATNÁ vydaná dňa 1.1.1986

Determination of silicon and iron in graphite products of high purity by spectroscopical method--The powder method

NEPLATNÁ vydaná dňa 1.1.1986

Method for electrolytical testing of cathode carbon bricks used in the aluminium electrolytical cell

NEPLATNÁ vydaná dňa 1.1.1986

Method for determination of specific resistance of carbon materials

NEPLATNÁ vydaná dňa 13.8.1986

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NEPLATNÁ vydaná dňa 1.1.1986