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 Photobioreactor FMT 150 Learn More Meter Group PHYTOS 31 - Leaf Wetness Sensor Learn More Soil Moisture Specimen Holder for broad leaf Learn More Skye Instruments SKU 440 UVI Sensor Learn More