Convert Concentrations or Partial Pressure of
O2, H2, N2O, H2S, or CO2

With the Unisense Unit Converter, you can convert concentrations of gases (μmol/L, %, ppm (vol/vol), ppm (mg/L)) and partial pressure (mm Hg, mBar) of five gases dissolved in water: Oxygen, hydrogen, nitrous oxide, hydrogen sulfide, and carbon dioxide.

You can adjust temperature, salinity, and pressure in relation to your application.

The calculations are based on the articles mentioned below.

References:

Diffusivity and solubility of nitric oxide in water and saline
Zacharia, Ian G et al. (2005), Annals of Biomedical Engineering, vol. 33, 214-222
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The chemistry of the hydrogen sulfide and iron sulfide systems in natural waters
Morse, John W. et al. (1987), Earth Science Reviews, vol. 24, 1-42
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The solubility of nitrogen, oxygen and argon in water and seawater
Weiss, R. F. (1970), Deep-Sea Research and Oceanographic Abstracts, vol. 17, 721-735
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Solubility Data Series
KERTES, A.S. et al. (1981), Oxygen and Ozone, vol. 8, vi
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Solubility of hydrogen in water, seawater, and NaCl solutions

Crozier T.E. & Yamamoto S. (1974), Journal of Chemical and Engineering Data 19: 242-244