Sensor fittings include a wide selection of ion sensors integrated into disposable fluid tight fittings. Standard offerings include 1/4-28, and Luer Lock fittings. Materials of construction include PEEK, carbonate, acrylic, PTFE or Tefzel. Coaxial connector sold separately. Manifolds sold separately. Dataloggers sold separately. Every sensor must be purchased with a reference electrode fitting in order to function.