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 Complete G4 Sleeve Kit Learn More Qubit Systems Q-Box CO650 Plant CO2 Analysis Learn More Others Munsell Plant Tissue Color Charts Learn More Meter Group PHYTOS 31 - Leaf Wetness Sensor Learn More