Accurate Fm′ with the new Multiphase Flash™ Fluorometer
Is your Fm′ accurate? An innovative technique called Multiphase Flash™ Fluorescence (MPF) estimates Fm′ more accurately than traditional methodology.Learn More
iPad® & iPhone® Apps
Control the LI-6400XT with your iPad/iPhone.Learn More
Analyzers in the Sensor Head
Gas analyzers in the sensor head make it possible to maintain intercellular CO2 (Ci) and water vapor surrounding the leaf.Learn More
Science & Support
Experienced scientists and LI-6400XT experts provide training and technical support to assist with high-level research.Learn More
LI-6400XT Portable Photosynthesis System
Continuous Innovation in Gas Exchange & Fluorescence
The LI-6400XT Portable Photosynthesis and Fluorescence System is the most referenced photosynthesis system worldwide in peer-reviewed literature. It has multiple advantages that make it the top choice for researchers.
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- Rapid Response: Gas analyzers are located in the sensor head, minimizing time delays.
- Precise and Accurate: Measure small photosynthesis rates and CO2 exchange.
- Portable: Laboratory-quality measurements in a field-portable system.
- A variety of applications are supported by many chambers and light sources.
- Open-source software provides an unprecedented level of automation and flexibility.
- Powerful networking capabilities provide a variety of data output, file sharing, remote diagnostics and training possibilities.
- Complete solution: Measures fluorescence and gas exchange simultaneously over the same leaf area with full control of environmental variables.
- Reliable: LI-COR's commitment to continuous innovation and quality products (ISO 9001:2001 certified) ensures your LI-6400XT remains a smart choice for years to come.
- Rugged: Can be used in environments ranging from the moist tropics to the dry arctic.
App for iPhone & iPad
Control the LI-6400XT from your iPad or iPhoneiPad
Educational webinars including details of photosynthesis measurements and custom techniques.Watch Now
Photosynthesis Resources: View All Resources
- References & Links
- Related Brochures
- Case Studies
- Featured Publications:
- Laisk A, Loreto F. 1996. Determining photosynthetic parameters from leaf CO2 exchange and chlorophyll fluorescence. Ribulose-1,5-bisphosphate carboxylase/oxygenase specificity factor, dark respiration in the light, excitation distribution between photosystems, alternative electron transport rate and mesophyll diffusion resistance. Plant Physiology 110, 903-912.
- Sharkey TD, Bernacchi CJ, Farquhar GD, Singaas EL. 2007. Fitting photosynthetic carbon dioxide response curves for C3 leaves. Plant, Cell and Environment 30, 1035-1040.
- Long SP, Bernacchi CJ. 2003. Gas exchange measurements, what can they tell us about the underlying limitations to photosynthesis? Procedures and sources of error. Journal of Experimental Botany 54, 2393-2401.