Halogen SensiCLĒNE™ The MP5™ was created with stable calibrations and low maintenance as priority requirements. To that end, Halogen designed a simple but highly effective self-cleaning system called SensiCLĒNE™. SensiCLĒNE™ utilizes the flow created by the built-in impeller to cycle special polymer beads over the three-electrode sensor and pH probe. This action prevents build-up, greatly reducing the maintenance required. The MP5™ maintains stable calibration and will typically need only a