EO/Gamma Sterilized Pre-Sterilized Cryogenic Vials: Custom Sizes Available for Pharma Clients

For pharmaceutical researchers and biotech companies, every sample—whether it's a vaccine candidate, stem cell line, or drug compound—represents months of hard work, investment, and hope. When it comes to storing these valuable materials at ultra-low temperatures (down to -196°C in liquid nitrogen), the choice of container is non-negotiable. A single leak, contamination, or non-compliant vial can derail an entire project, leading to lost data, delayed timelines, and regulatory setbacks.

This is where pre-sterilized cryogenic vials come in. Unlike non-sterilized options that require in-house sterilization (a time-consuming and risk-prone process), pre-sterilized vials are ready to use straight out of the box. They're treated with either ethylene oxide (EO) or gamma radiation—two of the most trusted sterilization methods in the pharma industry—to ensure a sterility assurance level (SAL) of 10⁻⁶, meaning there's less than one chance in a million of a viable microorganism surviving.

As a leading cryogenic tubes manufacturer, we understand the unique needs of pharma clients. We don't just sell containers; we provide solutions that protect your research, comply with strict regulatory standards, and adapt to your specific requirements—including custom sizes that fit your exact storage needs.

Cryogenic vials are specialized containers designed to store biological and pharmaceutical materials at extreme low temperatures. The pre-sterilized variants are treated with either EO or gamma radiation before packaging, eliminating the need for clients to perform their own sterilization. Let's break down the two methods:

Both methods are approved by the FDA, WHO, and other global regulatory bodies. The choice between EO and gamma depends on your material's sensitivity, batch size, and timeline.

Our cryogenic vials are engineered to meet the highest standards of the pharma industry. Here are the core features that set them apart:

Every vial is equipped with a silicone gasket that creates an airtight seal when closed. We offer two thread types: internal (to prevent cross-contamination) and external (for easy opening). Our leak-proof test involves submerging vials in liquid nitrogen for 24 hours—we guarantee a 0% leak rate in all batches.

All our vials are made from polypropylene (PP), a medical grade plastic that's durable, non-reactive, and resistant to extreme low temperatures. PP doesn't leach chemicals into your samples, making it ideal for long-term storage of pharmaceuticals. As a medical grade plastic bottles supplier, we source our PP resin from certified vendors that meet FDA and USP standards.

We offer a range of standard sizes to fit common pharma needs: 0.5ml (for small samples), 1.8ml (the most popular for cell banking), 2ml (for vaccine doses), and 5ml (for larger batches). But we don't stop there—we understand that many pharma clients have unique requirements. Whether you need a 3ml vial for a new cell therapy or a 10ml vial for bulk drug storage, our custom mold design for plastic bottles service can create the perfect size for you.

Our vials are manufactured in a dust-free GMP compliant workshop, ensuring no contamination during production. We're also an iso9001 certified packaging factory, which means every step of our process—from raw material inspection to final packaging—is documented and audited for quality. This compliance is critical for pharma clients, as it reduces the risk of regulatory issues during audits.

As an oem plastic container manufacturer, we know that one size doesn't fit all. Our team works closely with pharma clients to create custom solutions that align with their research and production goals. Here are the customization options we offer:

If your project requires a vial size that's not in our standard lineup, our engineers can design a custom mold for you. We offer free test molds to ensure the prototype meets your specifications before full-scale production. For example, a biotech client recently approached us needing 3ml vials for their CAR-T cell therapy—we designed a custom mold, produced a test batch, and delivered the final product in 4 weeks.

Traceability is key in the pharma industry. We offer custom branding options like embossed logos (on the vial or cap), printed batch numbers, barcodes, and QR codes. These features help you track your samples from production to storage, ensuring compliance with Good Manufacturing Practices (GMP).

Depending on your needs, we can provide child-resistant caps (for controlled substances like CBD), tamper-evident seals (to prevent unauthorized access), or screw caps with extra silicone gaskets (for enhanced leak protection). For example, a vaccine manufacturer recently requested tamper-evident seals on their 2ml vials to ensure product integrity during distribution.

Color-coded vials help you quickly identify different samples or batches. We offer custom colors for both the vial and cap—from amber (to protect light-sensitive materials) to blue, green, or red (for easy categorization).

The pharma industry is highly regulated, and choosing the right packaging partner is critical. Here's why we're the go-to plastic packaging supplier china for pharma clients:

Our factory is equipped with dust-free GMP compliant workshops that meet the strictest standards for pharma packaging. We're also an iso9001 certified packaging factory, which means our quality management system is audited annually to ensure consistency and compliance.

As a factory direct plastic bottles from china supplier, we cut out middlemen to offer competitive pricing. Our lead times are 2-4 weeks for standard orders and 4-6 weeks for custom orders—faster than most competitors in the market.

Our team of 20+ engineers has over 10 years of experience in custom mold design for plastic bottles. They work closely with clients to understand their needs and create solutions that are both functional and compliant.

We're committed to reducing our environmental footprint. We offer PCR (post-consumer recycled) plastic vials—made from recycled plastic deodorant containers and other post-consumer materials—that meet the same quality standards as virgin PP. We also recycle 90% of our production scrap and use energy-efficient machinery to reduce our carbon emissions.

Our pre-sterilized cryogenic vials are used in a wide range of pharma applications:

mRNA vaccines like Pfizer/BioNTech and Moderna require ultra-low temperature storage (-70°C to -196°C). Our vials are designed to withstand these temperatures without cracking or leaking, making them ideal for vaccine storage and distribution. A global vaccine manufacturer recently used our 2ml gamma-sterilized vials to store their COVID-19 booster doses.

Cell banking involves storing stem cells, blood cells, or tissue samples for future use. Our 1.8ml internal-thread vials are the gold standard for cell banking—they're leak-proof, sterile, and compatible with automated storage systems. A regenerative medicine company uses our vials to store their stem cell lines for clinical trials.

During drug development, researchers need to store drug compounds and test samples at low temperatures. Our custom-sized vials fit the exact volume of their samples, reducing waste and ensuring consistency. A pharmaceutical company used our 5ml EO-sterilized vials to store their new oncology drug candidate.

Clinical trials require traceable, compliant packaging. Our vials with printed batch numbers and barcodes help researchers track samples from the lab to the patient, ensuring data integrity. A contract research organization (CRO) uses our vials for their phase III clinical trials.

Quality is at the heart of everything we do. Our quality control process spans every stage of production:

The pharma industry is increasingly focused on sustainability, and we're here to help. Our sustainable solutions include:

Our PCR plastic vials are made from 50-100% post-consumer recycled plastic. They're indistinguishable from virgin PP in terms of quality, durability, and performance. For example, a cosmetic company recently switched to our PCR plastic deodorant containers and saw a 30% reduction in their carbon footprint.

We use recyclable cardboard boxes for shipping, reducing plastic waste. We also offer bulk packaging options to minimize the number of boxes used.

Our factory uses solar panels to generate 20% of its energy needs. We also optimize our production lines to reduce energy consumption and waste.

Your research deserves the best protection. Our pre-sterilized cryogenic vials are designed to meet the strictest standards of the pharma industry—from leak-proof design to regulatory compliance. Whether you need standard sizes or custom solutions, we're here to help.

As a leading cryogenic tubes manufacturer, we're committed to providing high-quality, sustainable, and cost-effective solutions. Visit our website to learn more about our products and services, or reach out to our team to discuss your custom needs.