Glass tubing is one of the most important primary pharmaceutical packaging materials, especially for injectables, vaccines, biologics, ampoules, vials, and syringes.
It is widely used due to its chemical inertness, transparency, sterility compatibility, and strong barrier protection against moisture and gases. The most preferred material is Type I borosilicate glass, known for high hydrolytic resistance.
Major Challenges
Glass delamination → formation of glass flakes contaminating drug products
Drug–container interaction → ion leaching alters pH and drug stability
Adsorption of biologics on glass surface
Mechanical fragility causing breakage during transport or processing
Innovative Solutions
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Surface polymer or silicon coatings to prevent interaction
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atomic layer deposition technology ( aluminosilicate)
3)Automated inspection and defect detection technologies
4)Hybrid polymer-coated glass systems
5)Low-extractable glass designs to minimize leachables
Controlling Glass–Drug Interactions
Container–closure compatibility studies
Using detection method to identify defects like Raman, ICP-OES spectroscopy
Formulation pH optimization
Controlling manufacturing process.
Conclusion
Glass tubing remains a critical factor in pharmaceutical packaging, balancing drug protection with technological innovation. Continuous advancements are essential to ensure product stability, patient safety, and regulatory compliance.
MBH/PS