When it comes to storing sensitive biological materials—whether it's stem cells, vaccines, or laboratory reagents—there's no room for error. Cryogenic storage demands containers that can withstand extreme temperatures (-196°C, the boiling point of liquid nitrogen), maintain sterility, and prevent even the tiniest leaks that could compromise samples. Our cryogenic tubes are engineered with these challenges in mind, and it's why laboratories, biobanks, and pharmaceutical companies worldwide trust us with their most valuable materials.
Let's start with the basics: materials. We use only high-grade polypropylene (PP) for our cryogenic tubes. Why PP? Because it's not just durable—it's uniquely resistant to the thermal shock of repeated freezing and thawing cycles. Unlike cheaper plastics that can become brittle or crack at ultra-low temperatures, our PP tubes maintain their structural integrity, ensuring your samples stay protected, even in the harshest storage conditions.
But material is just the beginning. Every cryogenic tube we produce features a precision-engineered silicone gasket seal. This isn't your average rubber stopper—our gaskets are designed to create an airtight, leak-proof barrier that prevents liquid nitrogen ingress and sample contamination. We've tested these seals under rigorous conditions: imagine submerging a filled tube in liquid nitrogen, shaking it vigorously, and then thawing it—only to find not a single drop lost. That's the level of reliability we build into every product.
| Model Number | Capacity | Thread Type | Bottom Design | Sterilization Method | Key Applications |
|---|---|---|---|---|---|
| CT-05 | 0.5ml | Internal (Standard) | Conical | EO Sterilization | Small-volume reagents, PCR samples |
| CT-18 | 1.8ml | Internal (Secure-Lock) | Round | Gamma Irradiation | Cell cultures, bacterial stocks |
| CT-02 | 2ml | Internal (Wide-Mouth) | Conical | EO Sterilization | Vaccine storage, serum samples |
| CT-05E | 5ml | External (Heavy-Duty) | Round | Autoclavable (121°C) | Large cell banks, cryopreserved tissues |
| CT-10 | 10ml | External (Extra-Secure) | Flat | Gamma Irradiation | Industrial biotech, bulk reagents |
Beyond the physical design, we understand that contamination is a lab's worst enemy. That's why all our cryogenic tubes are manufactured in a dust-free GMP compliant workshop—a controlled environment where air particles, microbes, and contaminants are strictly regulated. Each tube undergoes rigorous testing to ensure it's DNase/RNase-free and non-pyrogenic. For labs working with sensitive nucleic acid samples or injectable pharmaceuticals, this isn't just a "nice-to-have"—it's a requirement. We don't just meet these standards; we exceed them, so you can focus on your research, not worrying about packaging failures.
And let's talk about convenience. Our cryogenic tubes are available in both pre-sterilized and non-sterilized options. For labs short on time, our pre-sterilized tubes arrive ready to use, with a certificate of sterility included in every batch. Need to label your samples? Each tube features a frosted writing area that accepts permanent markers, even after repeated freeze-thaw cycles. We've even added graduation marks on select models (like our 1.8ml and 2ml tubes) to help you measure volumes accurately—because we know every microliter counts in your work.