Convenient, entry-level system for the study of photosynthesis & respiration measurements in gas-phase samples under illumination LD12 electrode unit suitable for leaf discs up to 10cm2 cut from whole leaves, algae or moss etc Oxygen electrode control & signal acquisition via Oxyview control unit LS2 intensity adjustable by insertion of neutral density filters Oxygen signal output from Oxyview to recording device via 0 – 5V analogue output Upper optical port allows illumination from LS2 high intensity white light source