What must you do for CO2 levels? Why must you do the experiments as quickly as possible? Sodium hydrogencarbonate?
You can't really do anything - you just have to use a large flask and do the experiments as quickly as you can, so that the plant doesn't use up too much of the CO2 in the flask. If using sodium hydrogencarbonate make sure it's changed each time.
Comments
No comments have yet been made