... for insulating oil. Series IIJ-II oil tester is special for testing insulating oil’s ... oil reclamation,oil refinery,oil separating,oil separation,oil purifiers)(gear oil purifier,oil purification,oil restoration,oil regeneration,oil reclamation,oil reprocessing,oil recondition,oil processor,oil recycling,oil recovery,oil separator,oil refinement,oil decolorization,oil refinery,oil restituting,oil ...