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Reagents. Orthophosphoric acid. Specifications

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Non-ionic surface active agents. Polyalkoxylated derivatives. Determination of hydroxyl value. Phthalic anhydride method

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Soluble sodium silicate. Specifications

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Fired heaters for refineries. General technical requirements

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Highoxidized petroleum bitumen softener. Specifications

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Biotechnical industries equipment. Vegetable materials hydrolysis apparatus. Fermenters. Safety requirements. Test methods

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