Portable Photosynthesis System

Fastest & most accurate mobile system for simultaneous leaf gas exchange & chlorophyll fluorescence measurement

  • Truly portable! Lightweight console (4.8 kg) & leaf cuvette (0.7 kg)
  • True differential gas analyzer featuring four independent, non-dispersive infrared gas analyzers for both CO2, H2O
  • Small system volume optimized for the fastest, most accurate measurement of photosynthesis available
  • Automated & rapid A/Ci measurement based on both upward & downward CO2 ramps are quick & easy with our CO2 ramping technique
  • Fully automatic, independent & programmable control of CO2, H2O, temperature & light
  • 16+ hours of continuous use with three lightweight, energy-efficient Li-ion battery packs
  • Graph up to six parameters at once & customize X & Y axis for each
  • Simultaneous measurement of photosynthesis & chlorophyll fluorescence
  • 32 GB data storage
  • Powerful, highly customizable software
  • Versatility at its best with lightweight, field-ready plug & play accessories for several applications

CIRAS-4 Redefining the high-level field research experience

Redefining the high-level field research experience

Don’t let its compact size fool you.The highly accurate CIRAS-4 Portable Photosynthesis System is a lightning-fast portable powerhouse that will elevate your research experience. Its advanced software is exceptionally intuitive and customizable. You can manage environmental controls—as well as how you view your data—all from the touchscreen. It’s so easy to use, you can begin taking measurements right out of the box.

True differential analyzer for the ultimate accuracy & reliability

The heart and soul of any photosynthesis system is the analyzer. Accurate, reliable, and stable measurement and control of CO2 and H2O are critical for high-level research. A “true differential analyzer”, the CIRAS-4 features 4 independent, non-dispersive gas analyzers for accurate, simultaneous measurement and control of both CO2 and H2O — a significant advantage over “gas switching” systems and a major requirement for most researchers. The analyzers act as absorptiometers measuring infrared absorption only. The temperature-controlled optical bench is pressure compensated ensuring the most accurate measurement of CO2 and H2O under changing ambient conditions.

Packed with power

The CIRAS-4 comes standard with three (3) rechargeable Li-ion battery packs that provide 16+ hours of continuous operation. All 3 batteries can charge simultaneously allowing the user to collect lots of data without the interruption of swapping out battery packs.

An exceptional user experience – Minimal Size. Maximum Performance.

The CIRAS-4 is designed with the high-level field researcher in mind. Its small size makes it the most portable photosynthesis system of its kind, alleviating the need for assistance or tripods.
The innovative design of the CIRAS-4 utilizes its small system volume to ensure faster equilibration as well as the most rapid and accurate measurements available. Faster measurements allow the user to expand the parameters of their research and use their time and resources efficiently. Check out the size and weight of the CIRAS-4 console and leaf cuvettes and you will quickly discover why smaller and lighter is better.
The CIRAS-4’s full-color touch display offers fast-response touch navigation for all system operations. Exceptionally bright LEDs are adjustable for sunlight readability in any condition.

Fast Response. Fully Mobile.

The location of the CIRAS-4’s IRGAs (Infrared Gas Analyzers) in the main console — right next to the internal gas mixing system and flow control — allows the CIRAS-4 to provide an ultra-fast response to changes in “reference” gas, and the fastest and most accurate portable photosynthesis measurement available. IRGAs in the console makes the entire system highly portable, not to mention the added protection from dirt, dust, and debris commonly found in and around a leaf cuvette.


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