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 Spectrum Technologies FieldScout CM 1000 Chlorophyll Meter Learn More Qubit Systems Q-S151 CO2 Analyzer 0-2000ppm Learn More Photon Systems Instruments High Sensitivity FL 3500/HS Learn More Spectrum Technologies LightScout Foot-Candle Meter Learn More