| http://www.w3.org/ns/prov#value | - Where charged liquids are present in pipes, which is often the case in liquid handling systems, the insulation can consist of a section of insulating pipe; for example, glass or a low conductivity plastic such as polyethylene or polytetrafiuoroethylene (Teflon), polyamide, polymethacrylate (Lucite) or polystyrene.
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