The Apera Instruments DO803 Optical Dissolved Oxygen Electrode is the official replacement electrode for the DO850 and DO8500 oxygen meters. Utilizing advanced luminescent optical technology, it offers significant advantages over traditional galvanic and polarographic electrodes, ensuring fast, stable, and hassle-free dissolved oxygen measurements.

Key Features:

✔ Optical Technology – No oxygen consumption, eliminating the need for constant flow velocity adjustments.
✔ Simple & Convenient Operation – Just insert the electrode into the liquid, and readings stabilize in 1 to 3 minutes.
✔ Fast & Stable Measurements – Provides accurate readings quickly with minimal drift.
✔ Minimal Calibration Required – Calibration takes only 1 to 2 minutes and is needed less frequently than traditional sensors.
✔ Durable & Reliable – Comes with a 2-year warranty (1 year on the electrode cap).

The DO803 optical electrode makes dissolved oxygen measurement as simple as measuring pH, making it ideal for laboratory and field applications.