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 Spectrum Technologies FieldScout CM 1000 Chlorophyll Meter Learn More Spectrum Technologies Macroscopes Learn More Regent Instruments WinCAM NDVI Learn More Photon Systems Instruments Handy GFPCam FC 1000-H/GFP Learn More