Milwaukee MA840 Polarographic Dissolved Oxygen Probe

SKU: MA840
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The Milwaukee MA840 is a polarographic replacement probe for the MW600 Dissolved Oxygen meter.
The refillable polarographic probe has an oxygen-permeable polytetrafluroethylene (PTFE) membrane sensor for measuring dissolved oxygen (DO) levels in aqueous solutions.
The probe uses a platinum cathode and a silver chloride anode which the MW600 meter polarizes so that oxygen passing through the membrane can be measured to produce stable, accurate readings.


  • Reinforced plastic body for durability.
  • Built in temperature sensor to achieve thermal equilibrium between the sensor and the sample for more accurate reading.
  • 10 inches long with a tip that tapers from 1-1/2" to 3/4" in diameter.
  • 10 foot cable with a 7-pin DIN connector for attaching to the meter.


Body: ABS
Cathode: Platinum
Anode: Silver
Temperature Sensor: Yes
Warranty: 6 months

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