Why the Pharmaceutical Industry Chooses Fluorescence Quenching Method for Headspace Oxygen and Dissolved Oxygen?

1. High sensitivity

• Fluorescence MethodFluorescence quenching technology boasts an extraordinary sensitivity in detecting low oxygen concentrations, capable of detecting oxygen levels down to ppm and even lower. This technology leverages the characteristic that the luminous intensity of fluorescent substances varies with oxygen concentration, making it highly sensitive to minor changes in oxygen levels.
• Electrochemical SensorAlthough electrochemical sensors can detect oxygen at lower concentrations, their sensitivity is typically lower than that of fluorescence methods and they are prone to be affected by environmental humidity and temperature changes.
• Zirconia SensorZirconia sensors perform well in high-concentration oxygen detection, but are less sensitive than fluorescence methods in low-concentration oxygen detection.

2. Swift Response

• Fluorescence MethodThe fluorescent quenching sensor boasts an exceptionally rapid response time, providing immediate oxygen concentration readings, which is crucial for applications requiring real-time monitoring.
• Electrochemical SensorThe response time is relatively slow, especially when environmental conditions change, it may take longer to reach a stable state.
• Zirconia SensorAlthough the response time is quick, it typically requires a warm-up period, which affects its immediate measurement capabilities.

3. Non-destructive testing

• Fluorescence MethodFluorescent sensors perform non-destructive testing, causing no harm to the samples, and are suitable for online monitoring and real-time analysis.
• Electrochemical SensorsSamples are typically required for testing, which may cause some degree of damage to the samples.
• Zirconia SensorAlthough the quantity of the consumed samples is minimal, it still has an impact on the samples.

4. Stability and durability

• Fluorescence MethodThe fluorescence sensor boasts high stability and a long service life, making it suitable for continuous monitoring over extended periods and requiring no frequent calibration.
• Electrochemical SensorAfter prolonged use, drift may occur, necessitating regular calibration and replacement of the electrolyte.
• Zirconia SensorThe product maintains stable performance in high-temperature environments but experiences a decline in performance in low-temperature or environments with significant changes in humidity.

5. Wide Range of Applications

• Fluorescence MethodOur solutions excel in various fields, including biotechnology, pharmaceuticals, food and beverage, environmental monitoring, and industrial process control, particularly in applications requiring high precision and rapid response.
• Electrochemical SensorPrimarily used for medical and industrial gas detection, but performs poorly in high humidity and high-temperature environments.
• Zirconia SensorWidely used in high-temperature industrial processes and automotive exhaust monitoring, but its application in low-oxygen concentration environments is limited.

Summary

Fluorescence spectroscopy boasts significant advantages in high sensitivity, rapid response, non-destructive testing, stability, and wide applicability. Although electrochemical and zirconia sensors perform well in certain specific applications, the comprehensive performance of fluorescence spectroscopy makes it the preferred technology for a variety of application fields.