Oxygen solubility factor

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high-resolution terminology - matching measurements at high-resolution

Oxygen solubility factor


The oxygen solubility factor of the incubation medium, FM, expresses the effect of the salt concentration on oxygen solubility relative to pure water. In mitochondrial respiration medium MiR05, MiR05-Kit and MiR06, FM is 0.92 (determined at 30 and 37 °C) and in culture media is 0.89 (at 37 °C). FM varies depending on the temperature and composition of the medium. To determine the FM based on the oxygen concentration, specific methods and equipment are needed (see references Rasmussen HN, Rasmussen UF 2003 in MiPNet06.03). For other media, FM may be estimated using Table 4 in MiPNet06.03. For this purpose KCl based media can be described as "seawater" of varying salinity. The original data on sucrose and KCl-media (Reynafarje et al 1985), however, have been critizesed as artefacts and the FM of 0.92 is suggested in the temperature range of 10 °C to 40 °C as for MiR05.

Abbreviation: FM

Reference: MiPNet06.03 POS-calibration-SOP



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cO2* is the oxygen concentration at thermodynamic equilibrium with air under standard conditions of 100 kPa barometric pressure. FM has been determined for MiR05 at 30 °C and 37 °C, and is assumed to be identical at 25 °C, and identical in MiR06.

MitoPedia methods: Respirometry 

MitoPedia O2k and high-resolution respirometry: DatLab 

MitoPedia topics: Media for respirometry 


HRR: Theory 

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