The PSY1 psychrometer can measure the osmotic potential of plant materials such as leaves as well as stem and leaf water potential. The PSY1 for Osmotic Potential is a complete package including sensors, data loggers, insulation material, and power supply.
Osmotic potential can be performed on extracted sap samples or destructively sampled leaf tissue or leaf discs. These measurements can be made in the lab or in the field. Samples are placed in the calibration lid of the PSY1 Stem Psychrometer.
The psychrometer chamber is housed in the Osmotic Potential Insulator (OPI) to provide a thermally insulated boundary around the chamber. This eliminates the introduction of thermal gradients caused by a need to handle the chamber to load samples and provides a stable insulated thermal buffer from ambient temperature gradients within the surrounding environment.
Removing these factors enables a very rapid equilibration time between samples and high accuracy of measurement from -0.1 MPa to -10 MPa.