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 Soil Moisture G4 Series Grommets Learn More Regent Instruments WinRHIZO TRON Learn More Regent Instruments WinSEEDLE Learn More Campbell Scientific LWS-L Leaf-Wetness Sensor Learn More