Extech Benchtop Water Quality Meter/Stirrer for pH, ORP and Temp (WQ500)

In stock

This highly accurate benchtop meter features a built-in magnetic stirrer and a probe support rod and clamp. It measures pH, ORP, and temperature accurately over a wide range.

Extech Benchtop Water Quality Meter/Stirrer for pH, ORP and Temp (WQ500)




  • Measures pH, ORP, and temperature
  • Built-in magnetic stirrer with 30, 60, and 120 minute timer or continuous stirring setting
  • 2 or 3 point pH calibration provides excellent accuracy (4, 7, and 10pH)
  • Large backlit dual LCD simultaneously displays pH/mV measurement and temperature
  • Automatic temperature compensation
  • Memory stores up to 150 readings
  • Readings can be captured directly to a PC via the built-in USB interface
  • Splash-proof keyboard
  • Meter comes complete with pH glass electrode, pH calibration solutions (4 and 7pH), temperature probe, electrode clamp and rod, appropriate software, USB cable, AC adaptor and a stirrer

This highly accurate pH, ORP, and temperature measuring meter is designed for use in a lab or benchtop applications. It features a built-in magnetic stirrer and a clamp for holding a probe securely in place in your sample. This meter is ideal for keeping a sample completely mixed or for mixing a sample while simultaneously testing the pH/mV and temperature.


The large, backlit LCD screen and buttons are splash-proof and highly visible. The easy-to-use controls make testing a quick, simple, and accurate undertaking that practically anyone can do. Included with the meter are everything needed to start testing right away as well as software and a USB cable which allows the user to capture their readings on a PC in real time.




  • pH range: -2.00 to 16.00pH
  • ORP range: -1999 to + 1999mV
  • Temperature range: 32 to 212°F (0 to 100°C) for pH
  • Resolution: 0.01pH, 0.1mV, 0.1°
  • Accuracy: ±0.02pH; ±2mV; ±1.8°F/1°C
  • Power: 100 to 240V AC adapter with US, EU, UK, and AU plugs
  • Dimensions (meter): 4 x 5.7 x 1.3” (103 x 145 x 32mm)
  • Weight (meter): 1.5lbs (700g)

Unit Ship Weight: 5 lbs


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