Protecting high-value biologic products begins with ensuring the integrity of their packaging. These products are highly sensitive to environmental exposure, and even the smallest defect in a container closure system can compromise sterility, stability, and overall product performance. As a result, manufacturers require testing methods that provide accurate, reliable, and measurable insight into container closure integrity.
Helium leak detection has emerged as a highly precise deterministic method for evaluating package integrity, as it directly measures the flow of gas through potential leak paths. The SIMS 1915+ is an advanced helium leak detection technology designed specifically to support these requirements. By combining high sensitivity with quantitative measurement capabilities, it provides a dependable solution for assessing the integrity of biologic packaging under real-world conditions.
The Need for Advanced Integrity Testing in Biologics
Biologic products often require strict environmental controls, including cold and ultra cold storage conditions. Under such conditions, packaging materials, especially elastomeric closures, can undergo physical changes that may introduce micro leaks not detectable at room temperature.
Even the smallest leak can lead to:
- Microbial ingress
- Loss of sterility
- Product degradation
- Reduced therapeutic efficacy
Traditional methods like dye ingress and bubble testing cannot reliably detect very small, sub-micron defects. This has led to increased use of more accurate methods such as helium leak detection.
How SIMS 1915+ Works?
The SIMS 1915+ utilizes helium as a tracer gas to detect leaks in sealed packaging systems. Helium is introduced into or around the test package, and any escaping gas is measured using a highly sensitive detector. The measured signal directly correlates to the leak rate, providing a precise and quantitative result.
Helium is particularly effective due to its unique properties:
- Extremely small atomic size, enabling detection of very fine leaks.
- Inert and non-reactive, ensuring compatibility with sensitive biologics
- Low natural atmospheric presence, minimizing background noise for accurate readings
Reliable Performance at Low and Ultra Low Temperatures
Many biologic products are stored and transported under refrigerated or ultra-low temperature conditions. Such environments can influence the behavior of packaging materials, seals, and closure interfaces, which may in turn affect leak characteristics.
The SIMS 1915+ technology supports leak testing under these conditions, allowing evaluation to be carried out at temperatures that reflect actual storage and distribution environments. By measuring leak rates directly, it avoids reliance on estimated or modelled data. This approach provides a more accurate understanding of package performance across the full range of expected conditions, including cold chain applications.
Adaptability Across Packaging Formats
Traditional methods like dye ingress and bubble testing cannot reliably detect very small, sub-micron defects. This has led to increased use of more accurate methods such as helium leak detection.
Biologic products are packaged in a variety of formats, including vials, prefilled syringes, and cartridges. Each format presents its own challenges in terms of sealing and integrity.
The SIMS 1915+ is designed to accommodate these different packaging systems, making it suitable for both development stage and routine production testing. Its flexibility allows manufacturers to apply a consistent and reliable testing approach across multiple container types. This helps maintain uniform quality standards while simplifying testing processes across the product lifecycle.
Conclusion
The SIMS 1915+ is widely used to support the integrity of high-value biologic packaging. It is capable of identifying very small leaks, measuring true leak rates, and delivering results without delay. The system also performs effectively at low temperatures and can be applied across a range of packaging formats.
PTI's helium leak testing technology is used to detect micro leaks in packaging such as vials, syringes, cartridges, foil pouches, and blister packs. By focusing on direct measurement rather than estimation, it provides clear and reliable data that supports informed decision-making. This helps improve confidence in packaging performance while maintaining product quality and safety throughout development and distribution.
