The new Point Four Lumi4 Smart Probe is the first probe of its kind to measures dissolved oxygen with light.  Utilizing luminescence technology, the Lumi4 uses photodiodes and light pulses from blue and red LED to produce calculations of ^oC stable to 130^oC, % Sat, mg/L

Unlike conventional membrane oxygen sensors, the Lumi4 does not require regular maintenance of replacing easily damaged membrane cartridges and will provide accurate and stable reading in varying environments for extended periods without down time.