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CI-340 Handheld Photosynthesis System

Product Overview

Accurate and Portable— Gas Exchange on the Go!

Compact and durable, this single-handed tool measures photosynthesis, respiration, transpiration, stomatal conductance, PAR and internal CO2 all in one easy to carry unit. Optional accessory modules enable the researcher to control CO2, H2O, temperature, light intensity, and measure chlorophyll fluorescence, while the ten different customised chambers accommodate any leaf size, including conifer needles and cacti. Direct chamber connection to the CO2/H2O gas analyzer reduces measurement delay and enables rapid measurement of gas exchange.

The control modules expand the use of the CI-340 and enable users to modify light intensity, manipulate CO2 and H2O concentrates, adjust temperature, and measure chlorophyll fluoresence.

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  • Ecologists use the CI-340 to measure seasonal changes in photosynthetic rate as a response to temperature shifts.

  • Agronomists use the CI-340 to measure water status of crop plants across related genotypes.
    Horticulturalists use the CI-340 to measure changes in leaf physiology as a result of drought stress.



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CI-301AD - Adjustable H2O & CO2 Control Module

CI-301LA - Light Module

CI-510CS - Temperature Control Module

CI-510CF - Chlorophyll Flourescence Module

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  • Ten interchangeable chambers customised for different leaf types

  • Custom soil respiration chamber 

  • Control modules for light, temperature control, CO2 / H2O supply and chlorophyll fluorescence measurement

  • Chlorophyll fluorescence and photosynthesis measured simultaneously


  • Lightweight and optimized for single-handed operation

  • Stable analyzers for accurate CO2 and H2O measurements

  • Accommodates open and closed system measurements    

  • Infrared, non-contact leaf temperature measurement

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