2ml-30ml (2R-30R) Neutral / Low Borosilicate Glass Vials | Clear & Amber | Pharmaceutical Injection Bottles | ISO 8362-1 Compliant
Precision Tubular Glass Vials for Injectable Pharmaceutical Packaging
In the pharmaceutical industry, the integrity of primary packaging is inseparable from the safety and efficacy of the drug product it contains. At Vialab Pharmaceutical Packaging Co., Ltd. , we manufacture high-quality neutral and low borosilicate glass vials designed to meet the exacting demands of injectable drug storage and delivery. Available in a comprehensive range from 2ml to 30ml (2R to 30R) , in both clear and amber formulations, our vials deliver the chemical durability, dimensional precision, and regulatory compliance required for parenteral pharmaceutical applications worldwide.
Neutral / Low Borosilicate Glass: The Foundation of Drug Stability
Pharmaceutical glass containers are categorized based on their hydrolytic resistance—the ability to resist attack by water and aqueous solutions, which directly impacts drug stability. Borosilicate glass, often referred to as “neutral glass,” contains significant amounts of boric oxide, aluminum oxide, and alkali and alkaline earth oxides in the glass network. This composition provides exceptional chemical durability and minimal interaction with the drug product.
Our vials are manufactured from neutral borosilicate glass (COE 5.0 expansion family) and low borosilicate glass, both offering superior hydrolytic resistance compared to soda-lime glass alternatives. In extraction studies conducted with water at 121 °C, neutral borosilicate glass has demonstrated the highest chemical stability with the lowest amount of extractables. Accelerated ageing studies over 12 months at 40 °C with water, phosphate, and carbonate buffers have further confirmed that borosilicate glass consistently produces the lowest levels of leachables.
The chemical inertness of borosilicate glass is particularly critical for biologics, vaccines, monoclonal antibodies, and other sensitive injectable formulations where even trace levels of extractables and leachables can compromise drug stability and patient safety. For drugs formulated in the high pH range—which present a particular challenge for conventional packaging—borosilicate glass provides a reliable barrier against glass-induced stability issues.
Regulatory Compliance: Meeting Global Pharmacopeial Standards
Regulatory compliance is the cornerstone of pharmaceutical packaging. Our neutral and low borosilicate glass vials conform to the most rigorous international standards:
- USP <660> – Glass Containers for Pharmaceutical Use
- European Pharmacopoeia 3.2.1 – Glass Containers for Pharmaceutical Use
- ISO 8362-1 – Injection containers and accessories – Injection vials made of glass tubing
- ISO HGB1 – Hydrolytic resistance classification
- cGMP compliance throughout manufacturing
USP <660> defines Type I glass as borosilicate (neutral) glass, recognizing its superior hydrolytic resistance. The European Pharmacopoeia similarly designates Type I glass as neutral (borosilicate) glass. Our vials meet these pharmacopeial requirements, ensuring they are suitable for the most demanding injectable drug applications.
In a significant regulatory development, the revised USP <660> (effective October 2023) shifted from a “composition based” glass type definition to a “performance based” one. While this allows additional glass compositions to qualify as Type I based on hydrolytic resistance performance, borosilicate glass remains the gold standard and the material most widely specified by drug manufacturers and regulatory authorities worldwide.
ISO 8362-1 Standard Dimensions: 2R to 30R
Our vials are manufactured in strict accordance with ISO 8362-1, the international standard that specifies the form, dimensions, and capacities of tubular glass injection vials. The standard defines a range of sizes designated by the “R” (Reference) nomenclature, from 2R to 100R.
Our product range covers the most commonly used sizes for injectable pharmaceuticals:
| Specification | Max. Volume (ml) | d1 (mm) | d4 (mm) | h1 (mm) | Neck Finish |
|---|---|---|---|---|---|
| 2R | 4.0 | 16.0 | 10.5 | 35.0 | 13mm |
| 4R | 6.0 | 16.0 | 10.5 | 45.0 | 13mm |
| 6R | 10.0 | 22.0 | 12.0 | 40.0 | 20mm |
| 8R | 11.5 | 22.0 | 12.0 | 45.0 | 20mm |
| 10R | 13.5 | 24.0 | 14.0 | 45.0 | 20mm |
| 15R | 19.0 | 24.0 | 14.0 | 60.0 | 20mm |
| 20R | 26.0 | 30.0 | 16.0 | 55.0 | 20mm |
| 25R | 32.5 | 30.0 | 16.0 | 65.0 | 20mm |
| 30R | 37.5 | 30.0 | 16.0 | 75.0 | 20mm |
Dimensions conform to ISO 8362-1 standard
The precise dimensional control of our vials ensures seamless integration with automated filling lines, reducing downtime and improving overall operational efficiency. The standardized neck finishes (13mm for 2R-4R; 20mm for 6R-30R) ensure universal compatibility with industry-standard elastomeric stoppers and aluminum crimp seals.
Clear vs. Amber: Tailored Light Protection
We offer our vials in both clear (transparent) and amber formulations to accommodate different drug product requirements:
Clear Glass Vials provide maximum transparency, allowing for visual inspection of contents—a critical quality control step in pharmaceutical filling operations. Clear vials are ideal for drug products that are not sensitive to light exposure and where visual monitoring of fill levels, particulate matter, or color changes is essential.
Amber Glass Vials incorporate iron and titania agents that block ultraviolet (UV) light transmission, particularly in the UV-A and UV-B range. UV light can trigger chemical degradation, oxidation, or color changes in sensitive pharmaceutical formulations. Amber vials provide essential protection for light-sensitive drugs, including certain vitamins, antibiotics, biologics, and photolabile compounds. The light protection efficacy of amber glass depends on the wall thickness of the container, and our vials are manufactured with consistent wall thickness to ensure reliable UV-blocking performance.
Tubular Glass Construction: Superior for Lyophilization
Our vials are manufactured from glass tubing (tubular glass) rather than molded glass. Tubular glass vials offer distinct advantages for pharmaceutical applications:
- Thin, consistent wall thickness – Provides improved heat transfer during lyophilization (freeze-drying) compared to molded glass vials
- Uniform dimensions – Ensures consistent performance in automated filling and stoppering operations
- Superior surface quality – Minimizes the risk of cosmetic defects and particulate generation
The consistent wall thickness of tubular vials is particularly important for lyophilized products, where efficient heat transfer during the freeze-drying process directly impacts product quality and cycle time. Our vials are suitable for packaging many injectable drugs, including those that require lyophilization to remain stable.
Quality Assurance: ISO and GMP Compliant Manufacturing
At Vialab, quality is embedded in every stage of production. Our manufacturing facilities operate under strict quality control systems compliant with ISO 9001 and cGMP standards.
Each vial undergoes 100% dimensional and visual inspection to ensure zero-defect delivery. Our advanced production lines and cleanroom facilities maintain the highest levels of cleanliness and particulate control, ensuring that every vial meets the exacting standards of the global pharmaceutical industry.
Customization Options
Recognizing that every pharmaceutical product has unique packaging requirements, Vialab offers extensive customization options:
- Custom dimensions – Tailored to specific filling line requirements within ISO standard tolerances
- Custom neck finishes – Available upon request
- Custom printing – Hot stamping and screen printing for branding and traceability
- Custom logo acceptance – Customer logos can be applied to vials
- Custom packaging configurations – Including specialized carton and tray designs
Applications
Our 2ml-30ml neutral and low borosilicate glass vials are suitable for a wide range of pharmaceutical applications:
- Vaccines – Including mRNA, viral vector, and traditional vaccine formats
- Biologics and monoclonal antibodies – Sensitive protein-based therapeutics
- Lyophilized products – Freeze-dried drugs requiring superior heat transfer
- Insulin and peptide therapeutics – Low fill volume applications
- Diagnostic reagents – In vitro diagnostics and laboratory use
- Traditional injectables – Small molecule drugs for parenteral administration
Why Choose Vialab Neutral / Low Borosilicate Glass Vials?
| Feature | Benefit |
|---|---|
| Neutral / low borosilicate glass | High chemical resistance, minimal extractables/leachables, long-term drug stability |
| USP <660> / EP 3.2.1 / ISO 8362-1 compliance | Meets global regulatory requirements for injectable packaging |
| 2ml–30ml (2R–30R) range | Comprehensive size options for diverse dosage requirements |
| Clear and amber options | Flexibility for light-sensitive vs. non-light-sensitive products |
| Tubular glass construction | Consistent wall thickness, improved lyophilization performance |
| ISO/GMP compliant manufacturing | Consistent quality, zero-defect delivery, regulatory confidence |
| Customization available | Tailored dimensions, printing, and packaging configurations |
Conclusion
In the demanding world of injectable pharmaceutical packaging, material quality, dimensional precision, and regulatory compliance are non-negotiable. Vialab’s 2ml-30ml neutral and low borosilicate glass vials represent the convergence of advanced materials science, precision tubular glass manufacturing, and rigorous quality control.
From the hydrolytic resistance of borosilicate glass to the ISO 8362-1 standard dimensions that ensure seamless integration with filling lines, every aspect of our vials is designed to protect the safety and efficacy of the life-saving pharmaceuticals they contain. Whether you are developing a vaccine, a biologic therapeutic, or a traditional injectable, Vialab provides the pharmaceutical packaging solutions you need to bring your product to market with confidence.
Contact Vialab Pharmaceutical Packaging Co., Ltd. today to discuss your specific vial requirements and discover how our expertise can support your next pharmaceutical project.
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