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LI-6878 Leaf Trace Gas Integration System

REAL-TIME CO2 ISOTOPE, CH4, OR N2O MEASUREMENTS AT THE LEAF LEVEL

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The LI-6878 seamlessly integrates the LI-6800 Photosynthesis System with select LI-COR Trace Gas Analyzers to provide a single, complete solution for leaf-level trace gas flux measurements.

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See the LI-6878 in action and get expert guidance on taking leaf-level CH4, N2O, or CO2 isotope measurements—including a live workflow walkthrough and Q&A.

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MEASURE MORE AT THE LEAF LEVEL

This first-of-its-kind system simultaneously measures leaf-level photosynthetic gas exchange and trace gas fluxes or carbon isotope discrimination, wherever your plants grow. Unlock the ability to measure plant-mediated CH4 and N2O fluxes or determine mesophyll conductance (gm) in real-time with the LI-6878.

6800-78 Studio Photo

KEY FEATURES

Take measurements wherever you need to with the LI-6878. This compact, field- or lab-ready solution takes your work to the next level.

MOBILE MEASUREMENTS

Obtain leaf-level trace gas flux and carbon isotope data in the field, greenhouse, or lab. You can now collect precise, in-situ measurements without elaborate infrastructure.

INTEGRATED SOLUTION

Integrate the LI-6800's proven gas-exchange platform with the precision and long-term stability of LI-COR Trace Gas Analyzers. Together, they help you collect accurate, reliable, and fully integrated data.

COMPACT & EASY TO USE

Collect measurements where your plants are with the small footprint and the LI-6800's familiar, intuitive operating process—no large, complex, or experimental setups required.

DEEPER PLANT INSIGHTS

Get mesophyll conductance data and the parameters for calculating bundle sheath leakiness—key variables that inform efforts to improve photosynthetic carbon and water use efficiency.

CHOOSE YOUR ANALYZER

Pair the LI-6878 with the LI-COR Trace Gas Analyzer that best suits your goals: the LI-7810 CH4/CO2/H2O Trace Gas Analyzer, the LI-7820 N2O/H2O Trace Gas Analyzer, or the LI-7825 CO2 Isotope/NH₃ Trace Gas Analyzer.

LI-7825

CO2 Isotope/NH₃ Trace Gas Analyzer

Determine real-time carbon isotope discrimination at the leaf level to estimate advanced physiological parameters such as gm.

Figure 1. Glycine max (soybean) leaf under typical chamber conditions shows stable assimilation and 60-second averaged mesophyll conductance (gm, μmol mol-1 Pa-1), which is available in real-time on the LI-6800 console.

LI-7820

N2O/H2O Trace Gas Analyzer

Measure real-time N2O flux at the leaf level to investigate nitrogen-use efficiency in crops and other natural processes.

LI-7810

CH4/CO2/H2O Trace Gas Analyzer

Collect real-time leaf-level CH4 flux data to better understand plant-mediated greenhouse gas fluxes.

Figure 2. & Figure 3. Estimated detection limits as a function of leaf area for three flow rates (min, mid range and max). Estimated as √2 × σ for a 2 minute averaging interval observed with a typical LI-7810 and LI-7820 connected via the LI-6878.

APPLICATIONS

Reveal the mechanism that drive your plants' performance and turn leaf-level insights into better models, management, and outcomes.

Use the LI-6878 to:

  • Work to improve crop yields and food security by diving deeper into photosynthetic regulatory mechanisms
  • Estimate gm and other important photosynthetic parameters on the go
  • Identify and analyze the driving factors in crop stress physiology
  • Quantify plant-mediated fluxes of CH4 and N2O to improve ecosystem models
  • Understand how crops mediate N2O transport after fertilizer applications

Leaf-to-Leaf Podcast

Check out the ideas, insights, and stories that are shaping the world of plant physiology—and why the 6800-78's leaf-level gas exchange and trace gas data is key—in the Leaf-to-Leaf podcast.

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Leaf to Leaf logo

Leaf-Level Gas Exchange Guide

Explore leaf-level gas exchange in the book A Hitch-Hiker's Guide to Leaf-Level Gas Exchange. Understand core principles, advanced measurement methodology, and everything in between.

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LI-600N measuring a needle

Resources

Discover additional resources for the LI-6878 Leaf Trace Gas Integration System.

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GROW YOUR RESEARCH

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6800-78 Studio Photo

SPECIFICATIONS

  • Size: 30 cm x 16 cm x 20.5 cm
  • Weight: 2.285 kgs (Interface Box only)
  • Operating Temperature Range:
    • LI-6800: 0 to 50 °C
    • TGA: -25 °C to 45 °C (without solar load)
  • Operating Humidity Range:
    • LI-6800: 0 to 85%
    • TGA: 0 to 85% RH (non-condensing, without solar load)
  • Power Consumption:
    • Steady State: 5.5 W while running drying pump and enabling measurement valve
    • Calibration: 1 W while enabling one calibration valve
    • Maximum: 8 W
  • Power Supply: Powered from LI-6800 Console Auxiliary Connector

    • Specifications subject to change without notice.