Water potential of aqueous polyethylene glycol.

  title={Water potential of aqueous polyethylene glycol.},
  author={A A Steuter},
  journal={Plant physiology},
  volume={67 1},
Water potential (Psiomega) values were determined for aqueous colloids of four molecular sizes of polyethylene glycol (PEG) using freezing-point depression and vapor-pressure deficit methods. A significant third-order interaction exists between the method used to determine Psiomega, PEG molecular size, and concentration. At low PEG concentrations, freezing-point depression measurements result in higher (less negative) values for Psiomega than do vapor-pressure deficit measurements. The reverse… CONTINUE READING