Erratum

Ryder VE, Williams ES. Revisions to limits for propylene glycol in spacecraft air. Aerosp Med Hum Perform. 2022; 93(5):467–46.

DOI: https://www.doi.org/10.3357/AMHP.6037.2022

In the above article, in the second paragraph of the section on SMAC Development, the authors stated “Importantly, this value (32 ppm) for pure propylene glycol exceeds the saturated vapor concentration for most propylene glycol/ water mixtures being considered as thermal control fluids in exploration spacecraft.” This is inaccurate. The saturated vapor concentration for PG is 171 ppm at standard temperature and pressure, and the vapor pressure increases as water is added to the mixture.

The authors and the journal apologize for this misstatement.