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 PP Systems SBA-5 CO2 Analyzer Learn More OptiSciences OS30p+- Hand Held Chlorophyll Fluorometer Learn More Soil Moisture G4 Brass Support Washers Learn More Eijkelkamp 19.13 Portable Leaf Area Meter For Diseased Leaves Learn More