Umbelliferone as indicator for pH changes in one turn-over.
D055598:Chemical Phenomena; D002621:Chemistry; D004583:Electrons; D005453:Fluorescence; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007474:Ion Exchange; D007700:Kinetics; D010783:Photometry / Q000295:instrumentation; D010788:Photosynthesis; D010944:Plants; D011188:Potassium
D007202:Indicators and Reagents; D011188:Potassium