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 PP Systems EGM-5 Portable CO2 Gas Analyzer Learn More OptiSciences GFL-1a Learn More Regent Instruments WinRHIZO TRON Learn More Photon Systems Instruments SuperHead Fast FL 3500/F Learn More