FG4 FiveGo™ Portable DO Meter


This entry-level meter delivers rapid and reliable results; fits in your hand and also within your budget. It measures dissolved oxygen with a low-maintenence galvanic probe; once connected, the instrument can be utilized for water and environmental analysis and applications in the Food and Beverage industry.

Powerful, time-saving features

  • Storage capacity for up to 30 measurements
  • Three measuring modes: %, ppm and mg/L
  • IP54 protection vs. dust and water
  • Automatic endpoint recognition
  • Corrections for salinity and barometric pressure
  • Five self-explanatory buttons with well-organized display
  • Simultaneously shows readings, temperature, and endpoint criteria
  • Facilitates rapid measurement and calibration



Accuracy (DO)


±1%, ±1%mg/L, ±1%ppm

Accuracy (Temperature) ±0.3°C
Battery Life >500 hr.
Battery Type AAA
Certifications/Compliance CE, ISO 9001, ISO 14001
Data Points 30
Display Type LCD
IP Rating 54
Inputs BNC, Cinch
Operating Limits Ambient Temperature Range 0° to 40°C
Pressure Range 375 to 825mmHg, 500 to 1100mbar, 500 to 1100 hPa
Pressure Resolution 1mmHg, 1mbar, 1 hPa
Probe Type NTC
Range (DO) 0 to 199.9% and 200 to 400%, 0 to 45mg/L, 0 to 45ppm
Range (Salinity) 0 to 50ppt
Resolution (DO) 0.1%, 0.01mg/L, 0.01ppm
Resolution (Salinity) 0.1ppt
Resolution (Temperature) 0.1°C