A robotic dissolution system with on-line fiber-optic UV analysis

Area of Science:

• Pharmaceutical Sciences
• Analytical Chemistry
• Automation and Robotics

Background:

• Traditional dissolution analysis methods (HPLC, UV) are time-consuming and require manual sample handling.
• There is a need for automated, real-time analytical systems in pharmaceutical quality control.

Purpose of the Study:

• To develop and validate an automated, robotic system for real-time dissolution analysis of solid dosage forms.
• To improve the throughput and reduce manual labor in dissolution testing.

Main Methods:

• Utilized off-the-shelf hardware: UV-Vis spectrophotometer, fiber optic probe, robotic arm, and dissolution apparatus.
• Developed modular software for control, data acquisition, and spectral analysis via Dynamic Data Exchange (DDE).
• Automated media preparation, sample introduction, probe immersion, data collection, and vessel cleaning.

Main Results:

• The fiber optic system enabled real-time UV analysis across six dissolution vessels.
• Automated system successfully analyzed 10 mg active tablets.
• Significantly improved throughput compared to off-line HPLC or UV methods.
• Minimized laboratory personnel contact with samples.

Conclusions:

• The developed automated robotic system with on-line UV fiber optics is effective for real-time dissolution analysis.
• This system offers a substantial improvement in efficiency and automation for pharmaceutical dissolution testing.
• It reduces the need for manual intervention and off-line analysis, enhancing laboratory safety and productivity.