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 Regent Instruments WinSEEDLE Learn More Photon Systems Instruments N-Pen N 100 Learn More OptiSciences OS1p Chlorophyll Fluorometer Learn More Qubit Systems S157 CO2 Analyzer 0-2000ppm Learn More