Puretest cryogenic vials provide a configurable platform for low-temperature storage of cells, serum, plasma, microorganisms, enzymes and other research samples. The range covers 0.5 mL to 5.0 mL formats with internal- or external-thread closures and multiple bottom styles, allowing laboratories, distributors and private-label buyers to select a vial that fits their storage workflow.

Product Highlights

• Internal- and external-thread options: choose an O-ring-assisted internal closure or a low-contact external closure according to sealing, handling and rack-compatibility requirements.
• Capacity range from 0.5 mL to 5.0 mL: supports small research aliquots, routine biobanking and larger-volume specimen storage.
• Laboratory-grade polypropylene: designed for clarity, impact resistance and repeated low-temperature handling.
• Easy sample identification: available with printed graduations, a white writing area and color-coded cap or cap-insert options.
• Multiple base designs: self-standing star-foot and round-bottom configurations are available for manual handling, storage boxes and compatible locking racks.
• Sterile configurations available: contact Puretest to confirm sterility, cleanliness claims and documentation for the exact catalogue configuration required.

Internal Thread vs. External Thread

Available Formats

Exact dimensions, working volume, seal design, sterility, purity level and packaging depend on the selected configuration. Request the current specification sheet or a pre-production sample before qualification.

Cryogenic Storage and Safety

• Selected cryogenic-grade configurations are designed for ultra-low-temperature storage, including the vapor phase of liquid nitrogen.
• Do not immerse a vial in liquid nitrogen unless the exact product configuration has been specifically validated for liquid-phase use.
• Use appropriate personal protective equipment and laboratory procedures when freezing, retrieving or thawing samples.
• Do not overfill. Allow sufficient headspace for sample expansion during freezing.
• Always verify storage-box, cane, rack and automated handling compatibility using the dimensional drawing.

Applications

• Cell and tissue banks
• Serum, plasma and biological specimen storage
• Microbiology and molecular biology sample archives
• Biopharmaceutical research and quality-control laboratories
• University, clinical research and contract laboratory workflows

OEM, Private Label and Supply Support

Puretest supports distributors, laboratories and life-science brands with configurable caps, color coding, packaging, printed labels and private-label programs. For an accurate quotation, please provide the required volume, thread type, bottom style, sterility, cleanliness specification, packaging format and expected annual quantity.

Frequently Asked Questions

Which thread style should I choose?

Internal-thread vials are commonly selected when an O-ring closure is preferred. External-thread vials keep the threads away from the vial interior and can support fast, contamination-conscious handling. The correct choice depends on your sealing validation, storage system and operating procedure.

Can these vials be stored in liquid nitrogen?

Use vapor-phase liquid nitrogen storage unless the exact vial and closure combination is specifically validated for liquid-phase immersion. Ask us to confirm the applicable temperature range and supporting documentation for your selected configuration.

Can I request samples and drawings?

Yes. Samples, dimensional drawings, packaging details and private-label options are available for project evaluation.

Request a sample, specification sheet or quotation with your target volume, thread type, storage temperature, packaging preference and annual demand.