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LI-600 & LI-600N Porometer/ Fluorometers

Quickly move from plant performance to actionable insights

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Rapidly measure stomatal conductance and chlorophyll a fluorescence with the LI-600 and LI-600N Porometer/Fluorometers.

With a compact and handheld design, the LI-600 is built for rapid plant physiological data collection. It helps you see how plants are performing and responding to their environment—so you can move from data to decisions faster.

LI-600 experience

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Researchers, Plant Breeders, and Agronomists

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Models for Different Measurements

The LI-600 and LI-600N are designed to make high-quality leaf-level measurements simple, portable, and efficient. Both instruments are built for rapid measurements in the field, greenhouse, and lab under ambient conditions.

Simply use a workflow that supports consistent data collection across users and experiments—no complex setup or advanced training required.

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Designed for Real-World Work

When measurements are fast and easy to collect, your experiments can expand. The LI-600 enables you to measure more plants, more treatments, and under more conditions—helping you capture meaningful variation across your study.

By measuring stomatal conductance and chlorophyll fluorescence together in one device, you can better understand how your plants regulate water loss, respond to light, or adapt to stress.

In practice, this means you can:

  • Compare fertilizer or nutrient availability impact on plant performance
  • Screen plants for stress tolerance (e.g., heat, drought, light)
  • Identify top-performing plants for breeding or propagation purposes
  • Monitor plant health across greenhouses or grow operations
  • Make faster and more confident decisions during critical growth stages

Simple Setup, Reliable Results

The LI-600 is designed to reduce setup time and simplify measurements—so you can focus on collecting data, not on training yourself or your team.

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Fast Measurements

Collect data from your plants in seconds, screening hundreds (or even thousands) of leaves per day

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Portable Design

Take this handheld device anywhere you need it, no heavy or complex system required

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Easy to Use

Get started in no time, thanks to an intuitive workflow that anyone on your team can learn and use

An Inside Look at Plant Responses

Gather key physiological data that helps you better understand plant performance. These measurements provide practical insight into how plants respond to their environment—so you can make more informed decisions in research, breeding, and other applications.

  • Stomatal conductance: Understand how plants regulate water loss and gas exchange
  • Chlorophyll a fluorescence: Assess photosynthetic efficiency and stress response
  • Light- and dark-adapted responses: Compare plant performance under different conditions whenever you want it
  • Leaf-level variation: Capture differences across plants, treatments, and environments

From Screening to Deeper Insights

The LI-600 and LI-6800 Portable Photosynthesis System complement each other as part of a complete research workflow. Use the LI-600 to first screen large populations and identify meaningful differences in plant performance. Then use the LI-6800 to investigate those differences in detail under controlled conditions.

LI-600 experience

Step 1

Screen many plants

Rapidly screen up to 200 samples in an hour under ambient conditions with the LI-600.

Step 2

Spot differences that matter

Identify plants that stand out from the rest, whether it is improved water use, stress response, health, or other factors.

Step 3

Investigate in detail

Measure detailed parameters under controlled conditions with the LI-6800 to understand what drives those differences.

Step 4

Turn data into decisions

Use both datasets to determine optimal conditions, treatments, plant types, and more.

Want to know more?

Check out this app note to see how they work together.

Pick Up the Pace

Go from the field to the facts faster with the LI-600.

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