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YSI 55 Dissolved Oxygen Meter with 25' Cable, Probe


Read dissolved oxygen and temperature simultaneously with the YSI 55. It automatically compensates for temperature, salinity, and barometric pressure requiring no external calculations.

  • Displays dissolved oxygen in mg./L or % oxygen and temperature simultaneously
  • Large, back-lit display is easy to read in any lighting condition
  • Waterproof and it floats (just in case!)
  • Built-in altitude and salinity compensation
  • Fast sinking probe is made from stainless steel
  • Operates over 300 hours on six AA batteries (included)
  • Super easy push button calibration