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Iron ores and concentrates. Method for determination of external specific surface
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Concentrated kaolin. Method for determination of sulphur oxide (VI)
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Solid recovered fuels. Methods for the determination of ash melting behaviour by using characteristic temperatures
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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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Insulating oils. Detection of corrosive sulfur. Silver strip test
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