LI-6400XT Portable Photosynthesis System

The LI-6400XT is the instrument behind a rich legacy of research.


Thank you for your request.

You will receive an email shortly.

If you do not receive it within 24 hours or if you have any questions, please contact LI-COR at 1-402-467-3576.

  • Form must be completely filled out.

Request a Quote View Brochure

For cutting edge photosynthesis measurements, check out the all-new LI‑6800. The LI‑6800 combines the latest technology and scientific advancements to provide the leading instrument for gas exchange and chlorophyll fluorescence measurements.

Learn more about the LI-6800 LI-6800 Portable Photosynthesis System
LI-6400XT analyzers in the sensor head LI-6400XT accurate and precise LI-6400XT portable
  • sensor-head-thumb

    Rapid Response: Gas analyzers are located in the sensor head, minimizing time delays.

  • accurate-thumb

    Precise and Accurate: Measure small photosynthesis rates and CO2 exchange.

  • portable-thumb

    Portable: Laboratory-quality measurements in a field-portable system.

red light source open 6.2 software networking
  • light-source-thumb

    A variety of applications are supported by many chambers and light sources.

  • open-6-2-thumb

    Open-source software provides an unprecedented level of automation and flexibility.

  • networking-thumb

    Powerful networking capabilities provide a variety of data output, file sharing, remote diagnostics and training possibilities.

LI-6400XT-complete LI-6400XT-quality penguin
  • complete-thumb

    Complete solution: Measures fluorescence and gas exchange simultaneously over the same leaf area with full control of environmental variables.

  • quality-thumb 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.

  • penguin-thumb

    Rugged: Can be used in environments ranging from the moist tropics to the dry arctic.

LI-6400XT Terminal iPhone/iPad app

LI-6400XT Terminal
App for iPhone & iPad

iPhone/iPod Touch

Photosynthesis Webinars

Educational webinars including details of photosynthesis measurements and custom techniques.


Photosynthesis Resources: View All Resources

  • Featured Publications:
    • Walker B, Strand D, Kramer D, Cousins A. 2014. The Response of Cyclic Electron Flow around Photosystem I to Changes in Photorespiration and Nitrate Assimilation. Plant Physiology 165, 453-462.
    • 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.

Scroll to Top