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pH Sensors

Sea-Bird manufactures the following pH sensors:

  • pH and CTD plus Dissolved Oxygen, for Moored applications to 50 m — SeapHOxTM (ion selective field effect transistor type pH sensor)
  • pH and CTD plus Dissolved Oxygen, for Moored applications to 2000 m — Deep SeapHOxTM (ion selective field effect transistor type pH sensor)
  • pH and CTD plus Dissolved Oxygen, Chlorophyll a, and Turbidity, for Moored applications to 350 m — HydroCAT-EP (glass-electrode type pH sensor)
  • pH only, for Profiling applications to 1200 m — SBE 18 (glass-electrode type pH sensor)
  • pH and ORP, for Profiling applications to 1200 m — SBE 27 (glass-electrode type pH sensor)
  • pH for Autonomous Profiling Floats (Argo) — Float Deep SeaFETTM on Navis BGCi float (ion selective field effect transistor type pH sensor)

See the Sea-Bird Scientific pH page for more information and products.

New Read: Reliably Measuring pH In the Ocean: Deep SeaFET Maintains Accuracy over Broad Temp, Pressure Ranges, Charles W. Branham,  David J. Murphy, Ian D. Walsh, Sea-Technology, March 2017.

Measures conductivity, temperature, depth, dissolved oxygen, pH, turbidity, and chlorophyll. It is ideally suited for extended deployments in remote, biologically rich environments, for depths to 350 m.
 SeapHOx™ Ocean CT(D)-pH-DO Sensor
The Sea-Bird Scientific SeapHOx™ combines the SeaFET™ pH sensor with the SBE 37-SMP-ODO MicroCAT CTD+DO sensor.
The Sea-Bird Scientific Deep SeapHOx™ combines the Deep SeaFET™ pH sensor with the SBE 37-SMP-ODO MicroCAT CTD+DO sensor. The Deep SeaFET adapts the MBARI/SIO/Honeywell Deep-Sea DuraFET technology to measure pH in a deep moored package.
Pressure-balanced glass-electrode /Ag/AgCl-reference pH probe provides in-situ measurements at depths to 1200 meters.
Pressure balanced glass-electrode, Ag/AgCl reference probe and platinum O.R.P. electrode to provide in-situ measurements to 1200 m.
Autonomous profiling float for Argo and other programs, with Sea-Bird CTD, Dissolved Oxygen sensor, integrated WET Labs ECO-MCOMS fluorometer/backscattering sensor and Sea-Bird Scientific Float Deep SeaFET™ pH sensor. The Float Deep SeaFET adapts the field-tested MBARI/SIO/Honeywell Deep-Sea DuraFET technology to measure pH on the Navis BGCi float.
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