• SDL150
  • Manufacturer has 12 in stock
    This stock is typically available to ship in 3 - 5 working days.



  • Selectable data sampling rate: 1 second to 8hrs:59min:59sec
  • Manually store/recall up to 99 readings
  • Automatic Temperature Compensation from 0 to 50°C via temperature probe sensor built into polarographic type oxygen probe
  • Large backlit dual LCD
  • Record/Recall MIN, MAX readings
  • Data Hold plus Auto power off with disable function
  • Zero function
  • Built-in RS-232 interface

What's in the Box

  • 6 AA batteries
  • SD card
  • Probe
  • 2 spare replacement membranes
  • Electrolyte
  • Hard carrying case


The Extech SDL150 Dissolved Oxygen Meter measures dissolved oxygen from 0 to 20.0mg/L and 0 to 100.0% oxygen plus temperature from 32 to 122°F (0 to 50°C). The SDL150 also Records data on an SD card in Excel format For easy transfer to a PC for analysis.