Vials are widely used to package biologics, vaccines, and injectable drugs. To keep these products safe and effective, the vial and its closure system must remain properly sealed throughout storage and distribution.
Even very small leaks can allow moisture, oxygen, or contaminants to enter the package, potentially affecting product quality and sterility. Because these defects are often too small to be seen, pharmaceutical manufacturers need sensitive testing methods to detect them.
The SIMS 1915+ is a helium leak detection technology designed to identify extremely small leaks in vial packaging. With sensitivity down to 1×10?¹° mbar·L/sec, it helps manufacturers evaluate container closure integrity and better understand package performance.
Why is Vial Leak Detection Important?
Pharmaceutical vials are designed to maintain a sterile barrier throughout a product's lifecycle. However, even microscopic defects can create pathways for moisture, oxygen, or contaminants to enter the package.
These defects may not be visible during routine inspections, yet they can impact product quality, stability, and shelf life. Detecting and measuring these leaks is essential for ensuring that the container closure system performs as intended.
Why is Helium Used for Leak Detection?
Helium is commonly used as a tracer gas because its molecules are extremely small and can pass through very small leak paths. It is also inert, meaning it does not react with pharmaceutical products or packaging materials.
These properties make helium an effective gas for detecting very small leaks that may be difficult to identify using conventional testing methods.
Where do Leaks Occur in Pharmaceutical Vials?
A vial closure system consists of the glass vial, elastomer stopper, and aluminum crimp seal. Leaks can occur at the stopper-to-vial interface, within the crimp seal area, or through small defects created during manufacturing or handling.
While these leak paths may be microscopic, they can still affect package integrity over time.
How does the SIMS 1915+ Detect Leaks in Vials?
The SIMS 1915+ uses helium tracer gas to evaluate vial integrity. During testing, the vial is exposed to helium and placed inside a test chamber connected to a sensitive detection system.
If a leak is present, helium passes through the defect and is detected by the instrument. The system measures the amount of helium escaping from the vial and converts it into a leak rate value.
This direct measurement approach allows manufacturers to identify active leaks and accurately assess package performance.
How does the SIMS 1915+ Achieve Sensitivity Down to 1×10?¹° mbar·L/sec?
The SIMS 1915+ uses helium tracer gas and a highly sensitive detection system to identify very small leaks in vial packaging.
Because helium molecules are extremely small, they can pass through tiny defects that may be difficult to detect using other package integrity testing methods. The system measures the amount of helium escaping through a leak, allowing manufacturers to obtain an actual leak rate value.
Rather than estimating package performance from pressure changes or other indirect measurements, the SIMS 1915+ directly measures leakage as it occurs. This provides clear and reliable data on container closure integrity.
With sensitivity down to 1×10?¹° mbar·L/sec, the technology can detect extremely small leak paths that could impact product sterility, stability, and shelf life over time.
Conclusion
Maintaining vial integrity is essential for protecting the safety, quality, and stability of pharmaceutical products. The SIMS 1915+ offers an extremely sensitive detection solution to even the smallest leak that could affect product performance over time. The system provides data that is accurate and reliable through the use of helium tracer gas and direct leak rate measurement, which aids package development, validation and quality assurance efforts. With changing packaging demands, SIMS 1915+ enables packaging manufacturers to gain a deeper understanding of the integrity of container closure and to make informed packaging choices throughout the product lifecycle.
