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I'm curious how people measure quantitatively photosynthetic rate in labs.

I've seen many qualitative examples with direct observations of bubbles forming in water due to photosynthetic output of aquatic plants.

The ways I have come up with are:

  • to measure the CO2 intake.
  • to measure the O2 output.
  • to measure the amount of sugar produced.

The 3rd option seems most trivial, but I don't know how to measure the amount of CO2 present in a container. With a reaction? Or with a measuring machine of some sort? What about O2?

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  • $\begingroup$ Similar post $\endgroup$ – WYSIWYG Aug 21 '14 at 6:59