Submersible FL 3500/SM Photon Systems Instruments Categories Crops , Photosynthesis, Chlorophyll & Respiration Brochure Send Enquiry Overview PSI Submersible FL 3500/SM is underwater experiments Maximum operating depth of the instrument is ca 1 meter. The measuring compartment is equipped with a practical holder. Typical samples: Plants, corals and seaweed. Back Our Related Products OptiSciences GFPIII Fluorescence Probe Learn More PP Systems SBA-5 CO2 Analyzer Learn More Regent Instruments WinSCANOPY Learn More PP Systems Sample Injection Kit Learn More