Manuals, Software, & Support

The experienced application scientists and analysts at LI-COR are committed to providing the highest level of customer service and support.

Contact Us

US Toll-Free: 1-800-447-3576
International: 1-402-467-3576
Email: envsupport@licor.com

Training Courses

Photosynthesis training courses are offered throughout the year at various locations around the world. Courses provide information on instrument use, theory, data processing, maintenance, and related topics.

Register early, as class sizes are limited and fill quickly. LI‑COR reserves the right to cancel a session 3 weeks prior.

Courses are designed for users who have little or no experience with the LI‑6800 or LI-6400/XT, but may also be useful as a refresher for users with more experience. Some of the topics covered during the courses include:

  • Fundamentals of making gas exchange and fluorescence measurements
  • LI-6800 and LI‑6400/XT hardware and software introduction
  • Environmental control
  • Making survey and response curve measurements
  • Maintenance, calibration and troubleshooting

Additional Information

If attending training in Lincoln, NE or Bad Homburg, Germany, lunch and local transportation are included. Attendees are responsible for their own travel, lodging, and other meal expenses. LI‑COR will handle all lodging arrangements. Attendees must bring their own LI-6800 or LI‑6400/XT instrument to the course.

LI-6400XT Training CD

LI-COR's strong commitment to outstanding technical support for the LI-6400/6400XT Portable Photosynthesis System has expanded with the introduction of training CDs.

What is it?

The LI-6400XT Training CD (part number 6400-512) is intended to serve as an introduction and overview of the operation of the LI-6400XT Portable Photosynthesis System. It contains information on both the hardware and software operation of the system. The CD contains more than three hours of instruction and information ranging from assembly of the system to daily maintenance, configuration for different experimental protocols, software overview, making measurements, and more.

Who Benefits?

The first-time user of the LI-6400XT, new graduate and/or undergraduate students, technicians or researchers who want to learn the proper use and maintenance of the LI-6400XT, as well as anyone who wants a refresher course about the instrument.

CD Content

The CD is organized chronologically into individual information modules, starting with what to expect when you first unpack the instrument, and concluding with how to efficiently manage the data collected.

Product Specifications


Part Number Description
6400-512 LI-6400XT Training CD
6400-513 LI-6400XT Training Set
(5 CD Package)

Read More about the 6400-512 Training CD

Summary of the CD Contents:


  • Introduction
    • Initial Setup
    • Installing Accessories
  • Software Introduction
    • Open Screen
    • Welcome Screen
    • Shortcuts
    • Utility Screen
    • Configuration Screen
  • Getting Ready
    • Calibration
    • Daily Preparation Checklist
  • Making a Measurement
    • Measurements
    • New Measurements Screen
    • Making Measurements Screen
  • Data Handling
    • File Exchange Screen
    • Recomputing data

Customer Application Articles

Cellulosic Ethanol Study of Miscanthus Using the LI-6400

Cellulosic Ethanol Study of Miscanthus Using the LI‑6400

Learn how a group of researchers at the University of Illinois at Urbana-Champaign are using the LI-6400 to study Miscanthus x giagantus, a sterile hybrid grass with enormous potential as a biomass energy source. The group is comparing the productivity of Miscanthus to that of switchgrass and of corn.

Global climate change research at the University of Michigan Biological Station

Global climate change research at the University of Michigan Biological Station

Read how Dr. Peter S. Curtis of The Ohio State University and colleagues from various other universities conduct their research at sites like the University of Michigan's Biological Station. Dr. Curtis and colleagues use a variety of LI-COR instruments, including the LI-6400 Portable Photosynthesis System for stem and leaf respiration studies.

Influence of climate change on terrestrial flowering or vascular plants in the Antarctic

Influence of climate change on terrestrial flowering or vascular plants in the Antarctic

Tad Day and fellow researchers at Arizona State University use the LI-6400 Portable Photosynthesis System to study the influence of climate change, particularly ozone depletion/UV radiation and regional warming on terrestrial flowering or vascular plants in Antarctica.

Plant Ecophysiology Project at the University of Nebraska-Lincoln

Plant Ecophysiology Project at the University of Nebraska-Lincoln

What happens to plants when they are fed on by insects? This question has been the focus of the Plant Ecophysiology Project at the University of Nebraska-Lincoln's (UNL) Department of Entomology for the past 15 years. Learn how UNL entomologists are using the LI-6400 Portable Photosynthesis System to identify mechanisms of yield loss from defoliating pests.

Application Notes

stressed plants application note Stressed Plants?
Why the 6400‑40 Leaf Chamber Fluorometer is an ideal complement to expand the analysis capabilities of the LI‑6400/6400XT Systems.
 View document
Configuring and Operating the LI-6400 Portable Photosynthesis System with External Sensors Configuring and Operating the LI‑6400 Portable Photosynthesis System with External Sensors
 View document
Measuring Canopy Gas Exchange with the LI-6400 Portable Photosynthesis System Measuring Canopy Gas Exchange with the LI‑6400 Portable Photosynthesis System
 View document
Interfacing Custom Chambers to the LI-6400 Sensor Head Interfacing Custom Chambers to the LI‑6400 Sensor Head
The LI‑6400 can use custom-made chambers for a wide variety of applications.
 View document
Using the 6400-17 Whole Plant Arabidopsis Chamber Using the 6400‑17 Whole Plant Arabidopsis Chamber
 View document
6400-18A RGB Light Source and Photosynthetic Assimilation Understanding and Correcting Diffusion- based Leaks in the Opaque Conifer Chamber and Clear Conifer Chamber
 View document
6400-18A RGB Light Source and Photosynthetic Assimilation Modification of LI‑6400/LI‑6400XT to Control at Low [CO2]
 View document
Comparison of LI-6400 and LI-8100 Comparisons Between the LI‑COR LI‑6400 and LI‑8100
The theory underlying the two systems is outlined with a comparison of results obtained using each system.
 View document

Posters

PB_09
Photosynthetic Assessment of Small Plants Using Red, Green, Blue LED Light Source and New Whole Plant Arabidopsis Chamber
 View document

Correcting for Changes in O2 Concentration in the LI-6400 Photosynthesis System Correcting for Changes in O2 Concentration in the LI-6400 Photosynthesis System
 View document
RGBLED
Novel Red, Green, Blue LED Light Source and Whole Plant Chamber Make Photosynthetic Assessment of Small Plants Possible
 View document

Determination of Maximal Chlorophyll Fluorescence Using A Multiphase Single Flash of Sub-Saturating Intensity Determination of Maximal Chlorophyll Fluorescence Using A Multiphase Single Flash of Sub-Saturating Intensity
View document

References & Links

Journal References

Use the academic search engines below to find references to the LI-6400 or 6400-40 in many peer reviewed scientific publications.

For best results, start with either of the two search queries (LI-6400 or 6400-40) provided below or use the forms to customize a search. Results open in a new window.

References from HighWire Press - Internet Imprint of the Stanford University Libraries

Highwire Press at Standford University

References from Google Scholar

Common Internet searches can be performed with Google, and many articles can be found with Google Scholar:

Google Scholar

LI-6400XT Frequently Asked Questions

Q What can I measure using the LI-6400XT?

A You can measure photosynthesis, transpiration, stomatal conductance, sub-stomatal CO2 concentration and others. With the fluorometer, you can measure Fv/Fm, φPSII, ETR (or J), qp and qN. Click here for more information on example measurements.

Q Can the LI-6400XT measure respiration?

A Yes, the LI-6400XT measures leaf dark respiration. To do this, the light source has to be turned off and the reading for respiration appears as a negative photosynthetic rate. The LI-6400XT also measures both insect (part no. 6400-89) and soil respiration (part no. 6400-09).

Q How long will it take me to make a basic snapshot measurement?

A Once turned on, the instrument is ready to go in a couple of minutes, once the analyzers are to temperature. After warm up, a leaf is clamped into the chamber with the appropriate ambient environmental conditions set, and once the chamber air is flushed, a measurement can be logged. A typical measurement takes less than a minute.

Q Am I limited with my chamber options for the LI-6400XT?

A Scientists at LI-COR designed Soil CO₂ Flux Chambers, Conifer Chambers, Narrow Leaf Chambers and more for use with the LI-6400XT. The LI-6400XT allows numerous chambers to be attached to the sensor head, including custom chambers designed by the researcher.

Q Do I need to fill the entire area in the leaf chamber?

A No. Simply enter the actual leaf area into the LI-6400XT software and the calculated values will adjust accordingly. You may also adjust the actual leaf area after logging data in the software. It is important to remember, though, that more leaf area in a chamber results in larger flux and more precision.

Q Can I collect data automatically?

A Yes, various pre-set Autoprograms are loaded in the LI-6400XT software by the factory. You may also write your own Autoprogram using the menu-driven software utility.

Q I'm working in a lab where multiple researchers would be using the same instrument, how can I protect my data and settings?

A The LI-6400XT software allows you to generate personalized configurations that can be saved both on the instrument and your personal computer. This allows the user to define many instrument settings, including data and graphic presentations, which can then be uploaded to the instrument. An individual can customize their software without needing the instrument present.

Q How often do I need to send in my LI-6400XT for factory calibration?

A Factory calibration is suggested every 2 years and includes a number of system tests and maintenance, in addition to calibration of the sensors.

Q What training resources are available to help me learn how to use the LI-6400XT?

A A free training DVD and manuals (both hard-copy and digital format) are included with the purchase of the LI-6400XT, as well as numerous online resources such as webinars and application notes, which are continuously updated. LI-COR also offers hands-on training courses at our headquarters in Lincoln, Nebraska, USA. This course covers the fundamentals of making gas exchange measurements, including survey and response curves, as well as proper maintenance, calibration, and more. See here for a complete description of the course and dates for upcoming training sessions.

Q If I need to change my leaf area, for example, how can I calculate my data?

A The OPEN Version 6.x software creates Microsoft® Excel compatible files. The parameters have embedded equations that allow you to recalculate the data. Users can adjust the scenario and see results without needing to export the data to another program.

Q Can the LI-6400XT integrate into a classroom?

A The LI-6400XT provides students and educators with hands-on experience in learning the principles of photosynthesis, transpiration, and respiration. Software included with each LI-6400XT allows you to control the instrument from a PC, and project real-time data for a class. An Educational Resource Package (part no. 6400-520) contains 10 educational modules in the form of PowerPoint and videos for use in the classroom.

Q Can I upgrade my LI-6400 to the LI-6400XT?

A Yes! The user-installable XT Upgrade Kit (part no. 6400-926) converts your LI-6400 to the LI-6400XT. It includes a new digital board with 400 MHz processor, compact flash/Ethernet card slot, new console shell, Ethernet card adapter and cable, and the OPEN 6.2.x software. It can be factory- or user-installed.


Training Registration

Cost: The Photosynthesis Training Course is available at no charge if you are using one of the certificates enclosed with the LI‑6400XT. No longer have your certificate? Contact LI‑COR.

Please contact the training coordinator with any registration or reservation questions. The coordinator will contact you with your confirmation and provide you with additional information upon receipt of this form.




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