123 GFL-1a OptiSciences Categories Crops , Photosynthesis, Chlorophyll & Respiration Brochure Send Enquiry Overview Compact GFL liquid fluorometer for field studies GFL-1a provides easily interchangeable filter sets Easy conversion from discrete measuring samples to a flow through chamber, a water resistant case, and very high sensitivity Back Our Related Products Photon Systems Instruments Submersible FL 3500/SM Learn More Skye Instruments SKU 421 UVA Sensor Learn More PP Systems Insect Respiration Chamber Learn More Regent Instruments WinCAM NDVI Learn More