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Classification and general technical requirements for reclaimed perchloroethylene

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Petroleum and natural gas industries. Drilling and production equipment. Wellhead and Christmas tree equipment. General specifications

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Reagents. Hydrazine hydrochloride. Specifications

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Oil for ventilating filters. Specifications

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Reagents. Sodiumdichromate. Specifications

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Activated carbon. Standard Test Method for Hardness

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