Previous LI-COR photosynthesis meters (the models 6000 and6200) were of the closed-mode type. The new is an open-mode system. The andCI-301PS from CID Inc., support both open and closed modes ofoperation.
A) Schematic representation of the gas exchange system LiCor. B) Basic equation for photosynthesis and transpiration. C) Light curve resulting from plotting rate of CO2 assimilation versus increasing light intensity (irradiance). Note that assimilation is first limited by the amount of light and then by the rate of carboxylation and recycling of the required precursors. Schemes courtesy of Susanne von Caemmerer, The Australian National University.
LI-COR LI-6400XT Portable Photosynthesis System
The LI-COR LI-6400XT Photosynthesis System allows for respiration measurements on a wide variety of plant materials, as well as soil and insects. This portable instrument can be used both in the field and on the benchtop.