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Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions
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Comparing Container Closure Integrity Test Methods-Performance of Headspace Carbon Dioxide Analysis versus Helium

Christian Proff1, Ken Victor2, Allison Alix Caudill2

  • 1F. Hoffmann-La Roche Ltd, Global Device and Packaging Development, PTDZ, 4070 Basel, Switzerland; and christian.proff@roche.com.

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Summary
This summary is machine-generated.

Comparing high-sensitivity package leak detection methods, this study found excellent correlation (R² ≥ 0.98) between laser-based gas headspace analysis and helium leakage testing for vials. Both methods proved accurate for package seal quality assessment.

Keywords:
<1207>Carbon dioxideContainer closure integrityFrequency modulation spectroscopyHeadspace gas analysisHelium leakageUSP

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Area of Science:

  • Pharmaceutical Packaging
  • Analytical Chemistry
  • Quality Control

Background:

  • Deterministic leak test methods, such as laser-based gas headspace analysis and helium leakage, offer high sensitivity for package integrity.
  • No single package leak test method is universally applicable across all product-package systems.
  • Understanding the comparative advantages and limitations of these sensitive techniques is crucial for effective package validation.

Purpose of the Study:

  • To systematically compare the performance of laser-based gas headspace analysis and helium leakage testing.
  • To evaluate the correlation between these two high-sensitivity leak detection methods.
  • To assess the applicability of these techniques for package seal quality testing in pharmaceutical vials.

Main Methods:

  • Utilized identical positive controls with microcapillaries for both measurement techniques.
  • Gas headspace analysis measured carbon dioxide ingress rates under varying CO2 overpressures (0.5, 1.0, 2.0 bar).
  • Helium leakage technique measured ingress rates using a standard helium leak detector with a 100% helium atmosphere.

Main Results:

  • A strong correlation (minimum R² = 0.98) was observed between helium and carbon dioxide leakage rates for both ISO 2 R and ISO 10 R vials.
  • Both testing setups met accuracy acceptance criteria when compared to calibrated standards.
  • The study demonstrated the reliability of both methods for quantifying ingress rates.

Conclusions:

  • Laser-based gas headspace analysis and helium leakage testing are highly correlated and accurate methods for package leak detection.
  • These deterministic methods provide reliable data for package seal quality assessment.
  • The findings support the use of either technique, depending on specific application needs, for ensuring pharmaceutical product integrity.