Online UV Dissolution Testing System: Real-Time Data for Faster Drug Release Decisions

Online UV dissolution testing systems provide the pharmaceutical industry's first means to gain highly valuable, insight-rich process data, and do so without interrupting a dissolution run. Results of traditional offline dissolution sampling approaches have time lags due to the need for sample withdrawal and analysis. An Online UV Dissolution Testing System captures the complete dissolution profile by measuring continuously and in real-time, directly within the dissolution vessel.

The Shift Toward Real-Time Dissolution Monitoring

The market for dissolution testing systems is growing due to the increasing demand from laboratories for more rapid and trustworthy testing systems. More targeted drug development combined with an enhanced interest from organizations on data integrity increases the competition for online UV dissolution testing systems. The complete dissolution testing systems market is expected to grow from USD 3.79 billion in 2025 to USD 5.692 billion in 2032.

The largest segment, accounting for more than 65% of the overall market, will consist of automated dissolution testing systems. In this area, market participants have signaled clear preference for integrated online systems that provide real-time data and results, rather than reliance on manual systems that take considerable time to provide results.

The paradox of dissolution testing is that the process of making drug delivery decisions is centered around waiting. When traditional methods of dissolution testing are employed, analysts wait while samples are withdrawn at pre-determined intervals, processed, and analyzed with a UV-Vis spectrophotometer (off-line). Delays and variabilities are created by each step of the process. Online UV dissolution testing systems virtually eliminate all of these delays and variabilities.

•Continuous in situ measurement: Fiber optic probes are housed in the dissolution vessels and measure concentration continuously without needing to remove the probes or interrupt the tests. This provides near real-time dissolution data and practically infinite sample points, potentially as frequent as every five seconds.

•Profiling of immediate and modified release forms: The ability to capture time points at such a rapid pace enables the characterization of immediate release forms, profiles of which are not able to be described by traditional techniques. This method will also describe the release behavior for modified release forms.

•Sample protection: The risk of sample degradation is no longer an issue, as real-time measurement of the dissolution sample is taken in situ. The concentration measurement is made the instant the compound diffuses into the sample, making data for these difficult to quantify systems readily available.

The dissolution process is no longer a black box to formulators. Insights can now be gathered in real time, and data and analyses can be generated with unprecedented rapidity.

Performance that Builds Confidence in Every Run

For data to be truly valuable, they must first be trusted. Raytor's RT600-UV Online UV Dissolution Testing System was designed with trust and precision in mind for every single run and dissolution test. The system combines the power of  advanced fiber-optic technology with a high-performance UV-Vis spectrophotometer to seamlessly integrate with an unprecedented 6 optical channels for the simultaneous observation of 6 dissolution vessels.

•Linearity and repeatability: Even for low concentrations, the RT600-UV measures with excellent line values and high repeatability. These measurements yield an R² of greater than 0.9995 and a relative standard deviation of less than 2.0% for 10 replicates.

•From 1 mm - 10 mm multipath length: The RT600–UV is built to detect varying optical sensitivity levels. It has the capability to evaluate oral tablets, enteric-coated formulations, ophthalmic preparations, powders, and topical formulations.

•Each flow cell and a dedicated line for each vessel: Each flow cell is designed to minimize or eliminate cross-contamination, allowing for simultaneous sample testing and formulation comparisons with confidence.

The RT600–UV is fine-tuned to ensure accuracy and reliability with strict testing standards. Test results show that fiber-optic online measurements achieve performance comparable to manual sampling methods, with R-squared values of 0.9995 for UV online testing—statistically indistinguishable from manual controls.

Regulatory Readiness Built Into the Workflow

Compliance does not slow you down with the RT600-UV. The system's dissolution operating software is designed to support all regulatory requirements of 21 CFR Part 11, including account password management, permission controls, data integrity safeguards, audit trails, and data backup.

•Real-time result feedback: Test results are fed back to the operating system interface in real time, with protected electronic data documents automatically generated the moment a test completes.

•Automatic synchronous dosing: The system eliminates timing differences across vessels, and the dosing time point is fully audit-traced—no more manual logging errors.

•Preset online UV detection methods: Methods can be pre-programmed and invoked automatically. The predetermined method controls the entire process during the dissolution run from the dosing and the sampling to the UV detection and requires minimum analyst intervention.

This level of process integration allows quality control laboratories and research and development (R&D) teams to focus less on compliance documentation and more on generating scientific results.

Maximizing Efficiency in Real-World Labs

Current laboratory automation needs to include walkaway functionality without compromising data quality. The RT600-UV achieves this with a number of smart automation solutions.

•Precision Sampling: The sampling pump uses the most modern extraction technologies to achieve optimum sampling. During sampling, two inline filters perform an automatic pre-wash and saturation maintenance function to ensure that the integrity of the filters remains uncompromised for the entire length of time of the test.

•Semi-Automated High-Throughput Testing: The sample tray accommodates standard 1.5 mL and 10 mL vials and can perform testing without any user intervention.

•Real-Time Parameter Modulation: The dissolution process can be actively controlled by adjusting the speed of stirring or the volume of solvent. This makes it possible to design biorelevant media or modified release.

•Teflon® Tubing: Teflon®'s anti-adsorption properties and high stability against chemical corrosion help preserve a fluid path whilst reducing sample loss and preserving comparable results.

Together, these features decrease analyst variability, enhance data integrity, and allow laboratory personnel to focus on more value-adding activities. It also accommodates multiple users, across multiple shifts, and maintains consistent results for every operator.

Support for Real-Time Release Testing and Future-Ready Labs

The pharmaceutical industry aims for greater efficiency and shorter time to market via real-time release testing (RTRT). Leading regulatory authorities increasingly accept predictive dissolution models alongside rapid and direct dissolution testing performed at-line or on-line as part of a dissolution testing release of a critical quality attribute. Continuous manufacturing supports RTRT, and online UV dissolution testing systems will be beneficial to labs that wish to remain ahead of the game.

Systems like the RT600-UV are ideal to continue along this path. By providing data along the continuum of a release test as opposed to discrete data points provided at specific time intervals, the correlation of iv release to iv performance is improved. Additionally, and from a more operational standpoint, the testing system RT600-UV facilitates rapid method development and dissolution testing along the continuum of a release test. QC labs benefit from faster batch release decisions. Both gain from reduced manual intervention and improved data integrity.

Making Faster Drug Release Decisions with Confidence

When every day counts in drug development and quality control, waiting hours for offline UV results is no longer acceptable. An Online UV Dissolution Testing System provides the real-time data needed to make faster, better-informed decisions about drug release profiles. Raytor's RT600-UV combines precision optical performance, regulatory-ready software, and intelligent automation into a single integrated platform. It is designed for the way pharmaceutical laboratories work today—and the way they will work tomorrow.

To explore how the RT600-UV Online UV Dissolution Testing System can accelerate your dissolution testing workflows, download the product brochure or contact the Raytor team for a personalized consultation.

FAQs

Q: What makes your Online UV Dissolution Testing System better than traditional ones?

A: Our system utilizes continuous real-time UV detection via fiber-optic probes to measure the concentration of the drug in situ directly in the dissolution vessel. With the automation of this system, the manual tedious labor of sampling, filtering, and transporting the samples to a UV spectrometer is removed. Because of the lack of interruption to the dissolution test, real-time dissolution profiles are generated.

Q: Will the RT600-UV work with formulations that are unstable or difficult?

A: The RT600-UV is ideal for instant in-situ measurements of sample solutions that are unstable, difficult to prepare, of low concentrations, or of poor solubility.

Q: Is the system 21 CFR Part 11 compliant?

A: Yes. The software for dissolution operations is integrated into the system. Therefore, it has a full audit trail, electronic signatures, user access privileges, and it generates protected electronic data in a record retention format.

Q: What types of dosage forms can be tested?

A: The RT600-UV supports a wide range: immediate-release and enteric-coated tablets, soft capsules, powders, oral preparations, ophthalmic solutions, and topical formulations—with multiple pathlength options (1–10 mm) for different optical sensitivities.

Q: Does the RT600-UV support walk-away automation?

A: Yes. With a 120-position sample tray, automatic on-line filtering, and preset detection methods, the system can run unattended extended sequences while feeding results back to the software in real time.