Cryogenic Storage Consumables for Biological Sample Preservation

Cryogenic storage consumables encompass the vials, freezer boxes, racks, and labeling materials required to preserve biological specimens at temperatures from −80°C to −196°C in ultra-low temperature freezers and liquid nitrogen systems. Core products include polypropylene cryogenic vials (1.2–5 mL, internal and external thread), cardboard and polycarbonate freezer boxes (25-, 81-, and 100-well), and cryogenic-grade racks. MBP carries Globe Scientific cryogenic products (ISO 9001:2015 certified) and ships to research, academic, and clinical labs across the US, Canada, and internationally. MBP is a registered vendor for Howard Hughes Medical Institute, Vanderbilt University, and MD Anderson Cancer Center.

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Cryogenic Storage

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What Is Cryogenic Storage?

Cryogenic storage is the long-term preservation of biological materials at ultra-low temperatures where biochemical activity effectively stops. These conditions are typically achieved using liquid nitrogen at −196°C, vapor-phase nitrogen storage between approximately −150°C and −190°C, or ultra-low temperature freezers operating at −80°C for certain non-viable sample archives. Cryogenic storage is widely used for cell line preservation, serum and plasma banking, microbial culture storage, DNA and RNA archiving, tissue sample preservation, and pharmaceutical research. A complete cryogenic storage system generally includes cryogenic vials, freezer boxes, storage racks, cryoprotective media, and specialized labeling products designed for ultra-low temperatures. Successful cryogenic storage requires containers and accessories specifically rated for the intended temperature range, as standard laboratory tubes and storage containers are not designed to withstand cryogenic conditions and may fail during storage.

What you will find:

Cryogenic Vials

Available in internal and external threading to suit your contamination-control protocols.
Equipped with silicone O-rings or specialized screw caps to ensure a hermetic seal in ultra-low temperatures.
Manufactured from low-binding, USP Class VI polypropylene that is sterile and pyrogen-free.
Features large white writing areas and high-contrast graduations for easy sample identification.

How to Choose Cryogenic Storage Consumables

Vial Volume and Thread Type

Cryogenic vial size should be selected according to sample volume requirements. The most commonly used format is the 1.8–2.0 mL vial, which is suitable for cell lines, serum aliquots, and general biospecimen storage. Larger 3–5 mL vials are often chosen for tissue samples, microbial cultures, and glycerol stocks. Internal-thread vials help minimize contamination risks in sterile environments, while external-thread designs are frequently preferred in automated systems and high-throughput workflows because they are easier to handle with robotic equipment.

Container Material: Cardboard vs. Hard-Wall Storage Boxes

Storage boxes are available in different materials depending on how frequently samples will be accessed. Water-resistant cardboard freezer boxes provide a cost-effective solution for long-term archival storage in −80°C freezers and vapor-phase nitrogen systems. Polycarbonate hard-wall boxes offer greater durability and can withstand repeated handling, freeze-thaw cycles, and routine laboratory use without cracking or deforming, making them ideal for active sample collections.

Storage Phase: Vapor vs. Liquid Nitrogen

Vapor-phase storage is commonly selected for human biospecimens and regulated samples because it reduces the possibility of liquid nitrogen entering damaged containers and lowers the risk of cross-contamination. Liquid-phase storage provides the lowest achievable storage temperature and maximum thermal stability, but requires cryogenic vials specifically certified for direct liquid nitrogen immersion. The choice depends on regulatory requirements, sample type, and laboratory risk management practices.

Sterility and Certification

For cell culture, molecular biology, and clinical research applications, cryogenic consumables should be certified free from RNases, DNases, and pyrogens, and should be sterilized using validated processes such as gamma irradiation. Quality certifications, lot traceability, and certificates of conformity are often required for regulated laboratories and biobanking operations.

Specifications Context

Several key specifications should be reviewed when selecting cryogenic storage products, including minimum temperature rating, container material, sterility assurance level, and vial closure design. Polypropylene is the standard material for cryogenic vials due to its durability and resistance to ultra-low temperatures, while polycarbonate is commonly used for reusable storage boxes. Laboratories storing samples in liquid nitrogen should ensure that all components are certified for temperatures down to −196°C. For cell preservation applications using cryoprotective agents such as DMSO, controlled-rate freezing procedures are typically employed before samples are transferred into long-term cryogenic storage. Large biobanking facilities often utilize barcoded vials and laboratory information management systems (LIMS) to improve sample tracking, inventory control, and regulatory compliance.

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FAQ

Cryogenic storage refers to the preservation of biological specimens—cells, tissue, serum, DNA, RNA, and microorganisms—at temperatures at or below −130°C, most commonly using liquid nitrogen (−196°C) or vapor-phase nitrogen (−150 to −190°C). The U.S. National Institute of Standards and Technology defines cryogenics as processes involving temperatures below −180°C. At these temperatures, metabolic and degradation reactions effectively cease, enabling indefinite long-term preservation of viable biological material.

A functional cryogenic storage workflow requires cryogenic vials (1 mL–5 mL, internal or external thread), freezer boxes (cardboard or polycarbonate, 25–100 well formats), cryogenic racks to organize boxes inside dewars or ultra-low temperature freezers, cryogenic markers and labels rated to −196°C, and cryoprotective media such as DMSO-containing cell freezing reagents. For liquid nitrogen storage, a dewar or cryogenic refrigerator provides the vapor- or liquid-phase environment.

Vapor-phase liquid nitrogen storage maintains samples in nitrogen gas at approximately −150 to −190°C without sample contact with liquid nitrogen, reducing cross-contamination risk between vials and eliminating the hazard of liquid nitrogen entering a cracked vial under pressure. Liquid-phase storage submerges samples directly in liquid nitrogen at −196°C, delivering the lowest possible temperature, but requires vials certified for liquid-phase immersion (typically externally threaded with O-ring seals rated for direct LN2 contact).

Polypropylene cryogenic vials manufactured for laboratory use are typically autoclavable at 121°C for 20 minutes (standard gravity cycle), allowing re-sterilization of opened-but-unused containers. However, most cryogenic vials are supplied pre-sterilized by gamma irradiation and certified RNase-, DNase-, and pyrogen-free, making re-autoclaving unnecessary for routine use. Cardboard freezer boxes are not autoclavable; only polycarbonate or polypropylene hard-wall boxes should be autoclaved.

The 1.8–2.0 mL cryogenic vial is the most widely used size for cell line banking, serum aliquoting, and general biospecimen archiving, as it fits standard 81-well (9×9) and 100-well (10×10) freezer boxes. The 1.2 mL vial suits smaller aliquot workflows; 3–5 mL vials are used for larger-volume tissue samples and bacterial glycerol stocks. Many labs maintain 2 mL as the default to ensure SBS-footprint box compatibility and automated handling.

Properly cryopreserved samples stored in vapor-phase or liquid-phase liquid nitrogen at temperatures below −130°C have a theoretically indefinite storage life, as enzymatic and chemical degradation effectively cease. In practice, well-documented biobanks have recovered viable cell lines and DNA samples after 20–40 years of continuous cryogenic storage. Storage quality depends on the cryoprotection protocol, container integrity, and maintenance of uninterrupted ultra-low temperature conditions.

MBP carries Globe Scientific's cryogenic storage line, including CryoClear cryogenic vials (internal and external thread, 1–5 mL) and Globe's BioBox polycarbonate freezer boxes in 25-, 81-, and 100-well formats, rated from −196°C to +121°C. Globe Scientific is an ISO 9001:2015-certified manufacturer. MBP serves labs across the United States, Canada, and internationally and is a registered vendor for Howard Hughes Medical Institute and MD Anderson Cancer Center.

Standard laboratory-grade polypropylene cryogenic vials are rated from −196°C (vapor-phase liquid nitrogen) up to +121°C (autoclave sterilization). This range covers the full spectrum from cryopreservation to steam sterilization without the need for material substitution. Vials intended for liquid-phase liquid nitrogen immersion should additionally carry an explicit liquid-phase certification, as some polypropylene vials are rated for vapor phase only.

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