Hello, I'm working with isolated chloroplasts from spinach leaves. I am trying to measure the oxygen production triggered by light in the presence of external electron acceptors (like Hill reagent or potassium ferrocyanide) or during CO2 fixation. However, the instrument for O2 measurement (Hansatech oxygraph) has a light integrated that is broken. What do you suggest to use as light source to illuminate chloroplasts and at which power?

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