Your Trusted Partner for Reliable, Medical-Grade Sample Storage Solutions Since 2005
When it comes to preserving life-saving samples or critical research materials, the last thing any lab or pharmaceutical team wants to worry about is the reliability of their storage containers. Whether you're storing stem cells, vaccines, or patient samples, the difference between a successful experiment and a costly failure often comes down to the quality of your cryogenic tubes. That's where we come in. As a leading cryogenic tubes manufacturer with over 18 years of experience, we've built our reputation on creating plastic storage solutions that scientists and drug makers can count on—even at temperatures as low as -196°C.
In this guide, we'll walk you through everything you need to know about our bulk polypropylene cryogenic tubes: from their medical-grade construction and leak-proof design to why our ISO9001 certified packaging factory and dust-free GMP compliant workshop make us the top choice for labs and pharma companies worldwide. Let's dive in.
Not all plastics are created equal—especially when you're talking about storing sensitive materials at extreme temperatures. Polypropylene (PP) has become the gold standard for cryogenic tubes, and for good reason. Unlike other plastics that become brittle or crack in liquid nitrogen, PP maintains its structural integrity even at -196°C, ensuring your samples stay secure during long-term storage or transportation.
But it's not just about temperature resistance. Our medical grade plastic bottles and tubes are made from high-purity PP that's free from BPA, phthalates, and other harmful additives. This is crucial for pharmaceutical applications, where even the smallest chemical leach could compromise a drug's efficacy or contaminate a patient sample. We source our raw materials from certified suppliers in Europe and Asia, and every batch undergoes rigorous testing to ensure it meets USP Class VI and EP standards for medical plastics.
Think about it: if you're working with rare cell lines that took months to culture, or vaccines that need to stay stable during shipping, you can't afford to cut corners on storage. Our PP cryogenic tubes are designed to be more than just containers—they're a critical part of your research's success story.
There's nothing worse than opening a liquid nitrogen tank to find a tube has leaked, ruining not just its contents but potentially contaminating neighboring samples. Our cryogenic tubes feature a silicone gasket sealed cap that creates an airtight barrier, even under thermal shock. We test every batch by submerging tubes in liquid nitrogen for 24 hours, then thawing them to check for leaks—so you can trust that your samples stay where they belong.
We know lab work is stressful enough without fumbling with hard-to-open tubes. That's why our cryogenic tubes come with easy-grip caps and clear, embossed graduation marks (in ml) for precise sample measurement. The external threads on our 5ml tubes also make them compatible with most automated filling systems, saving your team time during high-throughput experiments.
No more wasting time sterilizing tubes in-house. All our cryogenic tubes are pre-sterilized using either ethylene oxide (EO) or gamma radiation, with a guaranteed sterility level of SAL 10⁻⁶. Each tube comes in a peel-open, dust-free package, so you can go straight from the box to the freezer—perfect for busy labs or pharma production lines.
Pharmaceutical companies and research institutions need to track every sample from collection to storage. Our tubes feature writable white patches and optional barcode labeling, making it easy to log samples in your LIMS system. For extra peace of mind, we also provide batch certificates of analysis (COA) with every order, so you can prove compliance during audits.
Every lab has unique storage requirements, which is why we offer a wide range of cryogenic tube sizes and configurations. Whether you need small 0.5ml tubes for DNA samples or larger 5ml options for bulk vaccines, we've got you covered. Here's a quick breakdown of our most popular models:
| Capacity | Bottom Type | Cap Thread | Sterilization Method | Recommended Use |
|---|---|---|---|---|
| 0.5ml | Conical | Internal (12mm) | Gamma | PCR samples, small cell aliquots |
| 1.8ml | Round or Conical | Internal (16mm) | EO or Gamma | Blood samples, bacterial cultures |
| 2ml | Conical | External (20mm) | Gamma | Stem cells, viral vectors |
| 5ml | Round | External (24mm) | EO | Bulk vaccines, tissue homogenates |
Need something custom? Our custom mold design for plastic bottles service extends to cryogenic tubes too. We've worked with clients to create specialized tubes with unique cap colors, extra-deep graduation marks, or even dual-chamber designs for pre-aliquoted reagents. Just share your 3D or sample requirements, and our in-house mold team will create a prototype for free testing—no obligation required.
When you're dealing with medical or research materials, "good enough" isn't good enough. That's why we've invested millions in building a production facility that meets the strictest global standards. Here's how we ensure every tube that leaves our factory is up to your expectations:
Our 10,000-square-meter production campus includes a Class 8 cleanroom dedicated solely to cryogenic tube manufacturing. That means filtered air, positive pressure, and strict gowning protocols for all staff—so there's no risk of dust, bacteria, or other contaminants getting into your tubes during production. We even test air quality daily to ensure particle counts stay below 352,000 particles/m³ (the GMP limit for pharmaceutical packaging).
Our entire operation is certified to ISO9001:2015, which means we follow strict quality management processes from raw material inspection to final shipping. Every step—from PP resin testing to mold calibration—is documented and audited regularly. This isn't just a piece of paper for us; it's a promise that we're constantly improving our processes to deliver better products for your lab.
Before any batch is approved, our quality control team runs a battery of tests: temperature cycling (-196°C to 37°C), drop testing (1.2m onto concrete), and torque testing on caps to ensure they stay sealed. We also conduct periodic biocompatibility tests to confirm our tubes don't interact with common samples like DMSO or cell culture media. If a batch doesn't meet our standards, it never leaves the factory—simple as that.
Our tubes aren't just for show—they're hard at work in labs and pharmaceutical facilities around the world. Here are a few examples of how our clients rely on them every day:
These are just a few stories—we've worked with over 3,000 labs and 150 pharmaceutical companies in 45 countries, and each one has a unique reason for choosing our tubes. The common thread? They need storage solutions they can trust, and we deliver.
Let's be honest: there are plenty of plastic container manufacturers out there. So what makes us different? Here are the top reasons our clients keep coming back:
Ready to upgrade your sample storage? Ordering from us is simple, whether you need standard tubes or custom solutions. Here's what to expect:
Start by selecting the size, bottom type, and sterilization method from our standard range (see the spec table above). If you need something custom—like a unique color or specialized cap—just send us a message with your requirements. Our sales team will help you finalize the details and provide a free quote within 24 hours.
Not sure if our tubes are right for your lab? We offer free sample packs (up to 50 tubes) so you can test them with your samples and equipment. Just cover the shipping cost, and we'll send them out within 3 business days.
Once you're ready to order, our minimum order quantity (MOQ) is just 10,000 tubes for standard models—perfect for small labs. For custom designs, MOQs start at 50,000 units, but we can often negotiate lower for repeat clients. We accept all major payment methods, including T/T, L/C, and PayPal.
Production times vary by order size: standard tubes take 15-20 days, while custom orders take 30-45 days. Once your order ships, we'll provide a tracking number and regular updates until it arrives at your door. We also offer door-to-door shipping via DHL, FedEx, or sea freight for larger orders.
Don't let subpar storage containers put your research at risk. Contact us today to request a free quote or sample pack, and discover why thousands of labs and pharma companies trust us with their most valuable samples. We're here to help you focus on what matters most: advancing science and saving lives.
At the end of the day, cryogenic tubes might seem like simple tools—but they're the unsung heroes of medical research and drug development. Every time you store a sample, you're investing in the future of science, and you deserve storage solutions that work as hard as you do. With our medical grade plastic bottles, ISO-certified processes, and commitment to quality, we're proud to be part of your team's success.
So whether you're stocking up for a big trial, upgrading your lab's storage, or need custom tubes for a unique project, we're here to help. Let's build something great together.