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The Hach LDO Probe

Dissolved Oxygen

    Product Information


    • Wastewater
    • Industrial water
    • Drinking water

    The Hach LDO probe is ready to work in your process right out of the box with no calibration required for the entire 2-year life of the sensor cap.

    There is virtually no maintenance with Hach’s breakthrough luminescent technology. There are no membranes to replace, no electrolyte solution to replenish, and no anode or cathode to clean.

    Customisable service indicators trigger a service message so that a cleaning cycle is never missed.

    A cutting-edge, 3D calibration procedure at the factory makes oxygen measurement with the Hach LDO probe more accurate than ever before. A robust new design gives the Hach LDO enhanced durability and reduced size for easier handling.


    • No Calibration Required
    • No Membranes to Replace
    • No Missed Cleaning Cycles
    • No Drift
    • No Complications
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