A Container Closure Integrity Test Method for Vials Stored at Cryogenic Conditions Using Headspace Oxygen Analysis.

An increasing number of pharmaceutical products require deep cold storage at cryogenic conditions, approximately -150°C to -190°C, to maintain stability and/or activity. Previous work has revealed that, at these extreme conditions, a typical pharmaceutical package configuration (vial, stopper, crimp cap) may lose container closure integrity (CCI) due to both the glass transition temperature (-55°C to -70°C) of the rubber stopper used to seal the vial and the different thermal expansion coefficients of the primary packaging components. Importantly, this type of temporary breach in CCI frequently reseals itself when the vial is brought back to ambient temperature.

Comparing Container Closure Integrity Test Methods-Performance of Headspace Carbon Dioxide Analysis versus Helium Leakage Using Positive Controls.

As described in USP <1207>, the deterministic leak test methods using laser-based gas headspace analysis and helium leakage are those with the highest sensitivities. As stated in the chapter, "no single package leak test or package seal quality test method is applicable to all product-package systems"; therefore, knowing the advantages and disadvantages of both of these techniques, and the extent to which they can be substituted for each other, is valuable. In an effort to begin addressing this issue, a systematic study using these two techniques has been performed.

Container Closure Integrity Test Method Development on Vials Stored at -80°C Using Headspace Carbon Dioxide Analysis.

Maintaining container closure integrity (CCI) is challenging for vials that are packaged at room temperature and stored and/or transported at a colder temperature, such as -80°C. Cold temperatures can affect the sealing mechanisms of the package because of the glass transition temperature (-50°C to -70°C) of the rubber stopper used to seal the vial and the different coefficients of thermal expansion of each of the primary packaging components. Most CCI tests are conducted at room temperature and detect leaks from permanent defects that always exist under all storage conditions.

Container Closure Integrity Test Using Frequency Modulation Spectroscopy Headspace Analysis with Carbon Dioxide as a Tracer Gas.

As described in USP <1207>, the container closure integrity (CCI) of a pharmaceutical package must be maintained throughout the product lifecycle to ensure sterility and stability. Current CCI test methods can be time-consuming, destructive, and lack the required sensitivity. This study presents a novel, fast, and nondestructive method for CCI testing that uses carbon dioxide as a tracer gas under effusive pressure conditions.