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 OptiSciences ACM-200 plus Anthocyanin Content Meter Learn More Photon Systems Instruments AlgaeTron AG 230 Learn More OptiSciences OS5p Chlorophyll Fluorometer Learn More Qubit Systems Q-P103 Gas Pump 1LPM Learn More