• Usually ships in 3-5 business days



  • Dual display of pH or mV and Temperature
  • 3 point calibration ensures the best linearity and accuracy
  • Date/time stamps and stores readings on an SD card
  • Excel format for easy transfer to a PC
  • Selectable data sampling rate: 1 second to 8hrs:59min:59sec
  • Large backlit dual LCD
  • Min/Max and Data Hold functions
  • Auto power off with disable function
  • Built-in RS-232 interface

What's in the Box

  • Six AA batteries
  • SD card
  • Hard carrying case
  • Sample buffers
  • Mini pH electrode (60120B)
  • Thermistor
  • Temperature probe (850188)


The Extech SDL100 pH/ORP/Temperature data logger records data on an SD card in Excel format for easy transfer to a PC for analysis. The SDL100 can manually store/recall up to 99 readings and the date/time function.