OROBOROS INSTRUMENTS developed in cooperation with WGT the specific OROBoPOS, which meets the highest quality criteria in terms of linearity, stability and sensitivity. The Clark type polarographic oxygen sensor (POS) remains the gold standard for measuring dissolved oxygen in biomedical, environmental and industrial applications.

From nM to mM O2: a million-fold dynamic range

The dynamic range of oxygen measurement spans from air saturation (about 200 micromolar) to the normoxic intracellular range (10-30 micromolar), but also to hyperoxia (oxygen saturation: millimolar), and specifically to severe hypoxia. Our most recent measurements of cellular respiration, in conjunction with the Titration-Injection microPump TIP2k, allow accurate steady-state measurement of oxgen levels and respiration with resolution of better than +/- 1 nmol O2 per liter.

See also: POS Article List

• Gnaiger E, Forstner H, eds (1983) Polarographic Oxygen Sensors. Aquatic and Physiological Applications. Springer, Berlin, Heidelberg, New York: 370 pp.
• Gnaiger E (2001) Bioenergetics at low oxygen: dependence of respiration and phosphorylation on oxygen and adenosine diphosphate supply. Respir. Physiol. 128: 277-297.

See also:

• Service of the polarographic oxygen sensor OROBoPOS. MiPNet08.04