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"The cleaning of pliable (textiles and leathers) and hard surfaces (medical devices, medical implants and fine metal parts) requires solvents to remove dirt and soils before the materials can be (re-)used in their final applications. These solvents can be organic solvents (halogena-ted and non-halogenated hydrocarbons) for a-polar soils or water with chemicals for polar soils. Each type of liquid ...