OxyCorder 401 Photon Systems Instruments Categories Crops , Photosynthesis, Chlorophyll & Respiration Brochure Send Enquiry Overview PSI OxyCorder 401 the primary application of the instrument is the polarographic measurement of dissolved oxygen by a Clark electrode. Used to measure dissolved oxygen in photosynthesis research. Back Our Related Products Photon Systems Instruments Submersible FL 3500/SM Learn More Spectrum Technologies FieldScout CM 1000 Chlorophyll Meter Learn More Spectrum Technologies LightScout Silicon Pyranometer Learn More Photon Systems Instruments Rover FC 900-R Learn More