Methods for chemical analysis of tungsten concentrates—The atomic absorption spectrophotometric method for the determination of calcium content

NEPLATNÁ vydána dne 21.6.1985

Methods for chemical analysis of tungsten concentrates—The gravimetric method for the determination hygroscopic moisture content

NEPLATNÁ vydána dne 21.6.1985

Methods for chemical analysis of tungsten concentrates—Determination of molybdenum content—The thiocyanate spectrophotometry

NEPLATNÁ vydána dne 30.10.2009

Methods for chemical analysis of tungsten concentrates—The chlorosulphophenol S photometric method for the determination niobium content; The butylrhodamine B extraction photometric method for the determination tantalum content

NEPLATNÁ vydána dne 21.6.1985

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NEPLATNÁ vydána dne 1.1.1985

Textiles—Tests for colour fastness—General principle of testing

NEPLATNÁ vydána dne 9.6.1997

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NEPLATNÁ vydána dne 1.1.1985

Self-roasting carbon bricks for calcium carbide furnace

NEPLATNÁ vydána dne 1.1.1985

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NEPLATNÁ vydána dne 1.1.1985

Carbon materials--Determination of the bulk density

NEPLATNÁ vydána dne 21.6.1985