ORP8552 ORP Meter Pen Type Redox 999mV Waterproof IP65 Digital Water Treatment Tester

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This ORP meter is a pen-type device to measure the amount of Oxidation Reduction Potential (ORP) level in a sample quickly and conveniently.

ORP is correlated with the quality and purity of water. ORP meter has a wide range of applications, it is excellent to use in waste water treatment, water disinfection process and laboratory experiments.


  • IP65 Waterproof housing
  • Big display for easy reading
  • Easy to use and provides instant display of results
  • Data hold to freeze readings
  • Pen size in professional shape, easy to fit in pocket
  • 20 mins auto power off
  • Low battery indicator
  • Cap to keep sensor wet
  • Factory Calibrated
  • Power by 4pcs LR44 batteries


  • Measuring Range : -999mV ~ +999mV
  • Accuracy : ±4mV
  • Resolution : 1mV
  • Protection Level : IP65
  • Auto Power Off
  • Hold Data Functions
  • Temperature
    • Operating Temp : 0°~60°C (32~140°F)
    • Storage Temp : -10~60°C (14~140°F)
  • Humidity
    • Operating Humidity : <80%RH
    • Storage Humidity : <90%
  • Battery Life : >20hrs continuous use
  • Battery: 4 x LR44 buttons batteries (included and installed in the main unit)
  • Size : 165mm(L) x 35mm(W) x 32mm(H)
  • Weight : 115g

Set Includes:

  • 1 x Digital ORP Tester
  • 4 x LR44 Buttons Battery (installed in the main unit)
  • 1 x English Operation Manual
  • Standard Factory Packaging

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