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Extech RE300 Exstik ORP Meter

Extech RE300 Exstik ORP Meter

Item SKU: RE300

MFG ID: RE300 | UPC:

The Extech RE300 Exstik ORP Meter combines quality and functionality with durability for a lifetime of customer satisfaction. It is a perfect amalgamation of useful features and meaningful innovations that make it a great and valuable product.


  • Measures ORP from -999 to 999mV
  • Automatic electronic self calibration
  • Simulated analog bar graph displays change in ORP reading
  • Memory stores and recalls 15 readings and saves last calibrated value
  • Data validation indicators show user the reading is stabilized
  • Large 3-1/2 digit (2000 count) Digital display with bar graph
  • Data Hold, Auto shut-off and low battery indication
  • Easy to replace electrode module is interchangeable with pH and chlorine Exstik modules; (built in chip automatically recognizes the type of probe plugged in for specific measurements)
  • Waterproof (IP57) design floats in water and protects the meter in wet environment
  • Complete with meter and electrode, protective sensor cap, sample cup, four 3V CR-2032 batteries, and neckstrap
  • Optional weighted base (EX006) holds plastic cup and Exstik meter


  • ORP (mV): 999 to 999mV
  • Resolution: 1mV
  • Accuracy: ±4mV
  • Power: four SR44W button batteries
  • Dimensions: 1.4 x 6.8 x 1.6" (35.6 x 172.7 x 40.6mm)
  • Weight: 3.85oz (110g)

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