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Technical sodium sulphide. Specifications

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Powdered mica for rubber industry. Specifications

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Insulating mineral oils. Determination of interfacial tension of oil against water by the ring method

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Brown coals, hard coals, anthracites, combustible shales and briquettes. Method for the preparation of common samples

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Reagents. Manganese carbonate, basic aqueous. Specifications

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Soluble sodium silicate. Specifications

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