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 Soil Moisture G4 Sealing Sleeves Learn More Regent Instruments WinSEEDLE Learn More OptiSciences CCM-300 Chlorophyll Content Meter Learn More PP Systems Ciras-4 Portable Photosynthesis System Learn More