The diameter of a typical 2 mL cryovial, commonly used for cryogenic sample storage, is 12.5 mm.
Understanding Cryovial Dimensions
Cryovials are essential tools in laboratories for the long-term storage of biological samples at ultra-low temperatures, often in liquid nitrogen freezers. Their precise dimensions are critical for ensuring compatibility with various laboratory equipment and storage systems.
For a standard 2 mL cryovial, key specifications that define its physical characteristics include:
| Specification | Value |
|---|---|
| Diameter | 12.5 mm |
| Volume | 2 mL |
| Height | 49 mm |
| Material | Polypropylene |
These measurements are carefully designed to provide optimal storage capacity while allowing for efficient organization within specialized freezer racks and boxes.
Material and Design Features
Cryovials are typically constructed from robust materials like polypropylene, chosen for its ability to withstand extreme temperature ranges without cracking or compromising sample integrity. Beyond basic dimensions, cryovials often incorporate several functional design elements:
- Secure Sealing: Many feature external or internal screw caps designed to create a leak-proof seal, preventing contamination and sample loss during storage or transport.
- Self-Standing Base: A common design includes a star-shaped or flat base, enabling the vials to stand upright on a workbench for easy handling and filling.
- Volume Graduations: Molded-in markings allow for quick estimation of sample volume, aiding in preparation and inventory management.
- Frosted Writing Area: A dedicated surface for labeling provides space for clear, permanent identification of samples.
Importance of Precise Dimensions in Laboratory Use
The exact dimensions of cryovials are not arbitrary; they play a vital role in the efficiency and safety of sample management:
- Compatibility with Storage Systems: Cryovials are designed to fit snugly into standardized freezer racks, boxes, and liquid nitrogen dewars. Precise diameters and heights ensure maximum storage density and proper organization.
- Automated Handling: In high-throughput laboratories, automated systems rely on consistent vial dimensions for robotic picking, placing, and scanning, minimizing human error and increasing efficiency.
- Sample Integrity: Proper fitting within storage systems reduces movement and potential damage to vials, thereby protecting the valuable biological samples they contain.
Understanding these specifications helps researchers and lab technicians select the appropriate cryovials for their specific needs, ensuring secure and efficient long-term sample preservation.
