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 Qubit Systems G400 Gas Mixing System Learn More OptiSciences GFL-1a Learn More Skye Instruments SKU 440 UVI Sensor Learn More Soil Moisture G4 Sealing Sleeves Learn More