Photon Systems Instruments (PSI) are leading suppliers of professional instruments for plant science,
Biotechnology, and Agriculture – including unique instruments for algae research and industry.

PSI products for algae research and aquaculture include fluorescence and thermoluminescence monitoring devices, as well as a range of equipment for cultivation and production.


Portable Field Devices for algae research: the AquaPens

Handheld, battery-powered devices for laboratory and field applications.
The portable AquaPens allow rapid measurements of chlorophyll fluorescence in suspensions and natural waters.

AquaPenAquaPen-C AP-C 100


Additional Fluorescence and Thermoluminescence Systems    

  • Algal Online Monitor: a portable and robust device for online detection and continuous monitoring of photosynthetic microorganisms

Algal Online Monitor

  • OnlineFlow Fluorometer: an autonomously operated measuring station for the continuous in situ monitoring of active fluorescence emitted by photosynthetic microorganisms.

Onlineflow Fluorometer


  •  PSI’s Thermoluminescence Systems investigate the structure of  energetic levels in the Photosystem II in algal or cyanobacterial suspensions.



Algae Cultivation

  • Photobioreactors for the controlled culture of algae or cyanobacteria in suspension and measuring of various experimental parameters (e.g. temperature, fluorescence,  pH, O 2 ).

Photobioreactor FMT 150Multi-Cultivator MC 1000Large-Scale Photobioreactors


  • AlgaeTrons for controlled algae or cyanobacteria in suspension.

AlgaeTron AG 130 - Inside ViewAlgaeTron AG 230


  • LED Light Sources and cultivation shelves: High-performance light emitting diodes (LEDs) that are easily controllable in timing and intensity, optionally supplied with  the Light Controller or Light Studio Software, and shelves with integrated LED systems.

LED Light SourceLED Fyto-Panel - Version BCultivation Shelves