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Brown coals, hard coals, anthracite, combustible shales and coal briquettes. Methods of sampling and preparation of samples for laboratory tests
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Chromium ores and concentrates. Methods for determination of total carbon
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Iron ores, concentrates, agglomerates and pellets. Methods of the determination of arsenic content
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Residual fuel oils. Test for straight-run. Method for determination of bromine number of fraction with boiling point up to 360 °C
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Niobium pentoxide. Method for the determination of phosphorus content
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