Figure 6
From: Ultrasonic atomizer based development of pH sensor for real time analysis
(a) pH profile of raw milk showing pH drop over time (primary axis), FITC-dextran fluorescence emission profile with different pH buffers (secondary axis) and Rubpy fluorescence emission profile with different pH buffers (secondary axis); (b) life-span of pH biosensor from the day of synthesis (i.e. 0th day representing 100% activity) in terms of percentage activity.
