The Act2 Laboratory System is a highly automated system for probing oxygenic photosynthesis by phytoplankton and assessing primary productivity by running fluorescence light curves.
The system combines the FastOcean Fast Repetition Rate fluorometer (FRRf) and Act2 System A to create a powerful laboratory tool. The Act2 system increments incident photon irradiance in small incremental steps to cover a wide dynamic range – up to and above full sunlight. The Act2 FLC sample chamber provides full spectrum actinic illumination from filtered white LEDs, with the option to swap in 450 nm LED units. This allows for a spectral match to be made between the FRRf and actinic illumination, allowing for direct comparison of FRRf and FLC-derived data.
The Act2 system provides an unparalleled level of automation, including real-time derivation of relative photosynthesis – photon irradiance (rPE) parameters (including alpha and Ek) from FLC data. These data can be used, by the controlling software, to