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 Step-In FytoScope FS 3400 Learn More Skye Instruments PAR Sensors Learn More OptiSciences OS5p Chlorophyll Fluorometer Learn More Qubit Systems G400 Gas Mixing System Learn More