LI-600 Experiences

LI-600 Free Trial

The LI-600 hasn’t visited everywhere just yet. Enter to win a one-week trial, so you can experience it for yourself.

Enter to Win

As a result of the LI-600 Free Trial, researchers like you have endeavored to measure plants of various shapes, sizes, and color with the LI-600 Porometer/Fluorometer. From tropical forests and hydroponic greenhouses, the LI-600 has traversed continents—reaching unique organizations and universities with a desire to learn more about plant physiology and the natural world. Read about these research adventures here.

Where in the world is the LI-600?

Already have an LI-600? Share your experience!


Dr. Nathan Lemoine | Marquette University
Milwaukee, WI, USA

Combining the speed of the LI-600 with the details from the LI-6800 provided a breadth and depth of measurements for Dr. Lemoine’s lab.

“The LI-600 could increase our data collection by an order of magnitude over the summer, just due to its ease of use, transportability, and speed.”

Dr. Lemoine performing lab measurements with the LI-600.

Dr. Lemoine, Assistant Professor at Marquette University, is already using LI-6800s to measure leaf-level gas exchange through A-Ci curves as he leads studies of the relationship between genotype and stress response in white campion (Silene latifolia). When the LI-600 arrived in his lab, a whole new dimension of capabilities arrived with it.

“The LI-600 provides us snapshots of stress via chlorophyll fluorescence and was a breeze to use. We conducted all measurements (60 plants) in less than an hour.” He adds, “We could use the LI-600 to then ask really high-resolution questions about temporal variability in stress: instantaneous, days, or weeks, kinds of questions that are difficult with an LI-6800 due to the time required to take each measurement.”

Dr. Lemoine pairs the LI-600 with the LI-6800 for lab measurements.

Susanne von Caemmerer | Australian National University
Canberra, AU

Professor Susanne von Caemmerer and technical officer Soumi Bala measured stomatal conductance and electron transport rate in tobacco and green foxtail (Setaria viridis) with the LI-600.

“The actual values measured agreed for both tobacco and Setaria with what we are used to seeing with measurements from the LI-6800.”

Von Caemmerer using the LI-600 to measure tobacco and green foxtail during the trial.

As Professor of Molecular Plant Physiology at the Australian National University’s Research School of Biology, von Caemmerer used the LI-600 to measure tobacco and green foxtail during the trial. She and Bala determined a “nice light profile and changes in conductance” in their measurements and achieved comparable results to those of the LI-6800.

Professor von Caemmerer is a Fellow of the Royal Society, the Australian Academy of Science, and the Germany Academy of Science, Leopoldina and serves as the Deputy Director of the ARC Excellence for Translational Photosynthesis.


Dr. Brett Wolfe | Louisiana State University
Baton Rouge, LA, USA

Live oak leaves are a little tricky to measure, but that does not stop Dr. Wolfe.

“It is a big leap from the previous model, the LI-1600.”

Grad student Alexandra Eisley using the LI-600 on water oak seedings in an experiment.

Grad student Alexandra Eisley using the LI-600 on water oak seedings in an experiment.

Dr. Brett Wolfe, Assistant Professor in the School of Renewable Natural Resources in Baton Rouge, LA won a one-week free trial of the LI-600. He used it to measure live oak leaves, which tend to have brittle tissue and curled margins. Although they are tricky to measure, he says “overall, I was really impressed with the LI-600. I really liked the ease of use and the barcode reader.” In spite of the characteristic toughness of measuring live oak leaves, “I am very impressed with the machine and hope to acquire one soon” he adds.


Boris Lazarević | University of Zagreb
Republic of Croatia, EU

Putting the LI-600 through the paces, Dr. Boris Lazarević got busy screening phenotypic differences.

“I thought I was not using it properly because it is so fast and straightforward.”

Dr. Boris Lazarević screening plants and gathering data.

Not stymied by other demands, Lazarević had experiments ready to go when the LI-600 Free Trial showed up. In one test, he screened a group of common beans (Phaseolus vulgaris L.) to identify how origins and morphology affect stomatal conductance and chlorophyll fluorescence. In a second experiment, he used the LI-600 to measure stomatal conductance, transpiration, leaf temperature, and light-adapted chlorophyll fluorescence of basil grown under different light intensities. He combined this data with gas exchange measurements from the LI-6800 Portable Photosynthesis System. Lazarević reports that the “LI-600 is very user-friendly and fast. It is the best hand-held device that I have worked with.” He adds that it has the versatility to be used in applications from ecophysiology research, plant phenotyping, plant breeding, and education.

Dr. Boris Lazarević utilizing the light weight and portability of the LI-600 to get information from plants that are on the ground.
Dr. Boris Lazarević using both the LI-600 and LI-6800 to gather data.

Kellie Walters | University of Tennessee
Knoxville, TN, USA

When plant physiologist Kellie Walters measured delicate lettuce leaves, the LI-600 was there to help.

“It takes the guesswork out of things.”

Dr. Walters researching lettuce propagation with the LI-600.

For Dr. Kellie Walters, the LI-600 free trial couldn’t have come at a better time. In the middle of a lettuce propagation experiment, the pandemic forced her lab to take an unplanned shut down for a few weeks. Upon returning to the lab, the LI-600 had arrived and Walters put it to work. “I’m happy with how fast the data collection is” she said. “It is really nice that the LI-600 tells you when to clamp the leaf.” Measuring lettuce can be challenging because the leaves are often thin and easily damaged. She adds that “the LI-600 is more gentle on leaf tissue” than other instruments in her lab that can damage delicate leaves during measurements.

Dr. Walters researching lettuce propagation with the LI-600.

Taylor Sloey | Old Dominion University
Norfolk, VA, USA

Aquatic plant ecologist Taylor Sloey measured wetland grasses in tough terrain.

“I would recommend this product to anyone interested in collecting F and gsw measurements rapidly, or in physically strenuous settings.”

Dr. Sloey researching in wetlands with the LI-600.

Dr. Sloey is a wetland plant ecologist who studies the impacts of wetland drivers (hydrology, soil physicochemistry, and biota) on plant performance. Her research is focused on habitat restoration and ecosystem management practices. The LI-600 was an ideal tool for her research because it provided high quality fluorescence and water use efficiency data, while being light and easy to carry through tough muddy terrain.

“Operation was very user friendly and set-up out of the box was almost immediate,” she reports. “The auto settings and automatic calibration/stabilizing modes made it easy to use in the field and downloading the data afterward was simple and straight forward.” She adds, “The user manual and online video resources quickly answered any user question I had. Although I had a short time to build familiarity with the instrument, from my perspective, it seemed more accurate than other handheld fluorometers I've used.”

Dr. Sloey researching in wetlands with the LI-600.

Aaron Hogan | Florida International University
Miami, FL, USA

From the Swiss cheese plant (Monstera deliciosa) to the dragon tree (Dracaena draco), tropical plant ecologist Aaron Hogan measured over 40 unique tree species with the LI-600.

“The instrument exceeded my expectations…I have to say, in my estimation, this instrument lives up to the hype.”

Catherine Bravo with the LI-600

Catherine Bravo assisting Aaron Hogan with LI-600 measurements.

Interested in tropical plant diversity and global climate change, Hogan focused his trial week on measuring more than 120 leaves at Fairchild Tropical Botanical Garden. The LI-600—which “is outfitted with state-of-the-art fluorometry technology”—garnered high-quality data that “can readily complement more traditional gas exchange data (e.g., A-Ci curves).” In comparison to the LI-6800, Hogan also discovered that “all the fluorometer theory and application that comes with the LI-6800 has been streamlined and refined for the LI-600.” In just seven days of using the instrument, Hogan encountered wide applicability, unmatched speed, and ideal LI-6800 complementation.

To see his data and learn more about his trial, visit his blog.

Aaron Hogan showing LI-600 screen
Aaron Hogan showing LI-600 screen

Jake Emling | CropKing Inc.
Lodi, OH, USA

Horticulturist Jake Emling used the LI-600 to mass study entire greenhouses of tomato, lettuce, and Cannabis species.

“I found the most useful application to be the rapid sampling of plants throughout the greenhouses.”

Emling using the LI-600 at CropKing

Committed to improving growing practices, Emling concentrated his trial week on testing the instrument’s speed on large quantities of greenhouse plants. The experience affirmed that the LI-600 simplifies high-throughput research, allowing him to “take several different readings and measurements in a matter of seconds using only one unit” and to “save time and labor.” For Emling, the LI-600 plays a key role in increasing the efficiency and profitability of greenhouse practices.

Jake Emling using the LI-600 in a greenhouse
Jake Emling using the LI-600 on Cannabis

LI-600 Specifications

Continue Reading