Medical-Grade -196°C Cryogenic Storage Tubes for Blood & Tissue Samples

Medical-Grade Polypropylene: The Gold Standard for Cold Storage

Our cryogenic tubes are made from high-purity, medical-grade polypropylene (PP). Why PP? Because it's one of the few plastics that stays strong and stable even when submerged in liquid nitrogen. We source only virgin PP resin—no recycled materials here, because we refuse to take chances with your samples. Every batch of raw material goes through strict testing to ensure it's free of heavy metals, phthalates, and other contaminants. After all, if you're storing DNA or cell cultures, the last thing you want is a tube that introduces unwanted variables into your research.

Leak-Proof Design: Because "Almost" Isn't Acceptable

Ever had a tube leak in the? It's a nightmare. Not only do you lose the sample, but the liquid nitrogen can react with the contents, creating a messy, dangerous situation. That's why we've obsessed over every detail of our tube's sealing system. Each tube comes with a silicone O-ring gasket—soft enough to form a tight seal, but durable enough to withstand repeated freeze-thaw cycles. The screw cap features precision-machined threads that lock into place with a satisfying "click," so you know it's sealed right every time.

We test every batch of tubes for leaks by submerging them in colored water, spinning them in a centrifuge, and even freezing them to -196°C before checking for any signs of seepage. If just one tube fails, the entire batch gets rejected. That's how serious we are about keeping your samples safe.

More Than Just a Tube: Designed for Real Lab Workflows

We don't just make tubes—we make tubes that work with you. Lab work is chaotic enough without fumbling with poorly designed equipment. That's why our tubes have features you'll actually appreciate, like:

• Clear graduation marks: 0.5ml, 1.0ml, 1.8ml—easy to read, even with gloves on.
• Writable surface: A matte patch on the side lets you label tubes with a permanent marker, so you never mix up samples.
• Stackable design: Tubes nest neatly in racks, saving space in your freezer.
• Multiple sizes: From 0.5ml micro-tubes for tiny cell samples to 5ml tubes for larger tissue fragments—we've got you covered.

Blood Banks & Transfusion Medicine

Blood samples need to stay viable for weeks or even months before they're used. Whether it's storing plasma for emergency transfusions or preserving rare blood types for patients with specific needs, our tubes ensure that every ｄｒｏｐ remains uncontaminated and biologically active. One of our clients, a major blood bank in Europe, told us: "Since switching to your tubes, we've seen zero sample degradation during storage. That means more lives saved—plain and simple."

Stem Cell Research

Stem cells are notoriously sensitive to temperature changes and contamination. When researchers at a leading biotech firm were developing a new stem cell therapy for spinal cord injuries, they needed a tube that could protect these delicate cells through multiple freeze-thaw cycles. Our 2ml cryogenic tubes delivered—after six months in storage, the cells retained 95% viability, compared to just 78% with their previous supplier. "That 17% difference is the reason our clinical trial is on track," their lead researcher told us.

Vaccine Development

The COVID-19 pandemic showed the world how critical cold storage is for vaccines. Many vaccines, like mRNA-based ones, need to be stored at ultra-low temperatures to remain effective. Our cryogenic tubes are used by vaccine manufacturers to store viral strains and intermediate products during development. With their reliable sealing and temperature resistance, they help ensure that even the most fragile vaccines stay potent until they're ready to be formulated into doses.

Dust-Free, GMP-Compliant Workshops

Our production facility isn't just a factory—it's a cleanroom. We operate dust-free, GMP-compliant workshops where the air is filtered to remove 99.97% of particles larger than 0.3 microns. Employees wear full-body cleanroom suits, hairnets, and shoe covers to prevent contamination. Even the equipment is sanitized daily with FDA-approved disinfectants. Why? Because in medical packaging, cleanliness isn't optional—it's essential.

From Raw Material to Finished Tube: Quality Checks at Every Step

Quality control starts the moment raw materials arrive at our door. We test for purity, melt flow rate, and impact resistance before they ever enter production. During manufacturing, we use automated vision systems to inspect for defects like cracks, warped caps, or misaligned threads. After production, samples from each batch undergo:

• Freeze-thaw cycle testing (-196°C to room temperature, repeated 10 times)
• Centrifuge testing (up to 15,000 RPM)
• Chemical compatibility testing with common lab reagents
• Sterility testing (for pre-sterilized options)

Only when a batch passes all these tests does it get our seal of approval. And we keep detailed records of every test, so you can request a certificate of analysis (COA) for any order—no questions asked.