Wholesale Polypropylene Cryogenic Tubes | Custom Sizes Available

In the quiet corners of research labs, pharmaceutical facilities, and biobanking centers around the world, there's a small but critical tool working tirelessly to preserve the future of science and medicine: the cryogenic tube. These unassuming plastic containers hold the key to life-saving breakthroughs—from preserving precious cell lines that could cure diseases to storing vaccine samples that protect global populations. For anyone who relies on ultra-low temperature storage, the choice of cryogenic tube isn't just a purchase; it's a commitment to protecting what matters most. That's why so many labs and companies turn to polypropylene (PP) cryogenic tubes—and why we're proud to be a leading provider of these reliable, high-quality solutions.

When it comes to storing samples at -196°C (the temperature of liquid nitrogen), not all materials are created equal. Glass is brittle and prone to shattering, which poses a huge risk of sample loss and contamination. Other plastics might become rigid or crack under extreme cold, failing when you need them most. Polypropylene (PP) stands out as the ideal material for cryogenic tubes—and here's why:

As a trusted cryogenic tubes manufacturer, we've spent years refining our PP cryogenic tubes to meet the strictest standards of the scientific and pharmaceutical industries. Every tube we produce is designed with one goal in mind: to keep your samples safe, secure, and viable for years to come. Here are the key features that set our tubes apart:

Contamination is the enemy of any lab sample. That's why all our PP cryogenic tubes are sterile—either via ethylene oxide (EO) or gamma sterilization. We use a two-step process to ensure absolute purity: first, each tube is cleaned in our dust-free GMP compliant workshop, then it's sterilized and individually wrapped in a sterile pouch. This means you can open a tube and use it immediately without worrying about microbes ruining your samples. Our sterile cryo vials for liquid nitrogen are trusted by labs across the globe for their consistency and reliability.

Liquid nitrogen storage requires tubes that can handle the harshest conditions. Our tubes are tested rigorously to ensure they perform flawlessly at -196°C. We subject each batch to a 72-hour endurance test: tubes are filled with a mock sample, sealed, and stored in liquid nitrogen for three full days. After thawing, we check for any signs of damage or leakage. Only batches that pass this test make it to our customers. This level of quality control ensures that our -196°C cryogenic storage tubes are up to any challenge.

A leaky tube is a useless tube—especially when dealing with liquid nitrogen. Our leak-proof cryotubes with silicone gasket are designed to create an airtight seal that won't fail. The silicone gasket is made from high-quality medical-grade material that remains flexible even at ultra-low temperatures. When you screw the cap on, the gasket compresses against the tube's opening, forming a barrier that prevents liquid nitrogen from entering or samples from escaping. We test each tube for leaks by submerging it in liquid nitrogen and checking for bubbles—if even one tube leaks, the entire batch is rejected.

Keeping track of samples is critical for lab efficiency. Our PP cryogenic tubes have a smooth, writable surface that allows you to mark them directly with a permanent marker. This eliminates the need for stickers that can fall off or become illegible in cold storage. For larger orders, we offer custom labeling options: barcodes, logos, or batch numbers can be printed directly on the tubes. This is perfect for inventory management and traceability—especially for biobanks or pharmaceutical companies that handle thousands of samples.

We understand that every lab has unique needs. That's why we offer a wide range of standard sizes—and if you need something specific, our custom mold design for plastic bottles team can create a tube tailored to your requirements. Here's a breakdown of our standard sizes:

Our PP cryogenic tubes are used in a wide range of industries, from research to pharmaceuticals. Here are some of the most common applications:

Biobanks store millions of samples—sperm, embryos, stem cells, and blood samples—that are used for medical research and fertility treatments. These samples need to be viable for years, so reliability is non-negotiable. Our PP cryogenic tubes are a popular choice for biobanks because they are sterile, leak-proof, and durable. For example, many fertility clinics use our tubes to store sperm and embryos for in vitro fertilization (IVF) treatments. Our tubes ensure that these samples remain viable for decades, giving couples the best chance of starting a family.

The pharmaceutical industry relies on cryogenic storage for vaccine samples, drug candidates, and biological products. During the COVID-19 pandemic, our tubes were used by many pharma companies to store and transport vaccine samples. Our sterile, leak-proof tubes ensured that these samples remained safe and effective, even during long-distance transport. Our tubes are also used to store drug candidates that require ultra-low temperature storage—like monoclonal antibodies and gene therapies.

Research labs around the world use our PP cryogenic tubes to store cell lines, bacteria, viruses, and other biological samples. Cell lines are the backbone of many experiments—if a cell line is contaminated or lost, it can ruin years of work. Our sterile tubes are designed to prevent this: each tube is individually wrapped, so you can be sure that your samples are pure. Our writable surface also makes it easy to label samples, which is critical for lab organization.

Veterinary clinics and animal research labs use our PP cryogenic tubes to store animal samples—like blood, tissue, and semen. For example, many farms use our tubes to store bull semen for artificial insemination. Our tubes ensure that the semen remains viable, which helps improve the quality of livestock. Veterinary research labs also use our tubes to store samples for disease research—like studying the spread of viruses in animals.

Quality is our top priority. We are an ISO 9001 certified packaging factory and have a GMP compliant dust-free workshop. This means that every step of our production process—from raw material selection to final packaging—is regulated and monitored. Here's a look at our quality control measures:

Sustainability is a growing concern for many labs and companies. That's why we offer PCR (post-consumer recycled) PP cryogenic tubes. These tubes are made from 100% recycled plastic that has been cleaned and processed to meet medical-grade standards. PCR PP tubes have the same performance as virgin PP tubes—they are durable, leak-proof, and sterile. Using PCR tubes helps reduce your carbon footprint and shows your commitment to the environment. We also use eco-friendly packaging for wholesale orders: our boxes are made from recycled cardboard, and we minimize the use of plastic packaging.

As a leading China-based manufacturer, we offer a range of advantages for wholesale buyers:

When it comes to cryogenic storage, you can't afford to cut corners. Our PP cryogenic tubes are designed to meet the highest standards of quality and reliability. Whether you're a research lab, a pharmaceutical company, or a biobank, our tubes will keep your samples safe and secure. We offer a wide range of standard sizes, custom options, and sustainable alternatives—so you can find the perfect solution for your needs. As a trusted cryogenic tubes manufacturer, we're committed to helping you achieve your goals. Contact us today to learn more about our wholesale options and custom services.