Model: SD-230 | UPC: 800837001832

Real-time data logger with an integrated SD memory card (optional) measures/records pH and ORP levels in water with manual or automatic temperature compensation.

Manual Datasheet

REED SD-230 Offers

This SD series pH and ORP data logging meter is capable of measuring 0.00 to 14.00 pH and 0 to 1999 mV (ORP). The SD-230 features automatic temperature compensation, Data hold, Max/Min functions, and an easy-to-read backlit LCD display. Using an SD card (max 16Gb), a user can select the desired sampling rate and quickly generate an Excel file without the use of the software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring. The optional PC software also allows a user to track live measurements.

Please note pH and ORP electrodes are sold separately.

What’s included with the REED SD-230

  • Data Logging pH/ORP Meter
  • Batteries


  • Measures pH and ORP levels in water
  • Manual or automatic temperature compensation (with optional ATC probe, TP-07)
  • 3-point calibration ensures the best accuracy
  • Accepts pH/ORP Electrodes with BNC connector
  • Real-time data logger with integral SD memory card (optional)
  • User-selectable sampling rate
  • Easy-to-read backlit LCD display
  • Data hold and Min/Max functions
  • Optional PC software features live tracking via USB connection
  • Tripod mount for long-term monitoring
  • Low battery indicator and auto shut off

Ideal Applications for the REED SD-230

  • Water Conditioning
  • General-purpose pH measurement
  • Aquariums
  • Wastewater monitoring
  • Beverage Production