The AP4 Porometer measures stomatal aperture in terms of leaf conductance to water vapour.
This is a major determinant of water loss from plant leaves and of CO2 uptake in photosynthesis.
The innovative design of the AP4 provides users with logical, convenient operation and a comprehensive range of features and functions. Key benefits include an automated, rapid cycle that gives accurate temperature compensated readings, and a straightforward highly effective field calibration system.
In the video below (click on image to access) Delta-T Devices Technical Specialist, Tony Peloe, gives a detailed demonstration of the AP4’s capabilities.