Caplugs® Evergreen Flat Top MST™ Cryogenic Vial Caps, HDPE, Fuchsia, Non-Sterile, 200/Bag
These Flat Top MST™ Cryogenic Vial Caps are molded from durable HDPE in a high-visibility fuchsia color, giving biorepositories and research labs a fast way to color-code samples by study arm, hazard class, or storage date. The flat top profile supports stable upright stacking in cryo boxes and racks, while the secure thread engagement helps protect specimens during long-term frozen storage and freeze-thaw handling.
Technical Specifications
| Product Type | Flat Top MST™ Cryogenic Vial Caps |
| Volume/Size | Fits compatible MST cryogenic vials |
| Material | HDPE (high-density polyethylene) |
| Closure/Cap | Flat top, internal thread |
| Color | Fuchsia |
| Sterility | Non-Sterile |
| Pack Size | 200/Bag |
| Country of Origin | USA |
Applications
- Color-coding cryogenic vials by study cohort, patient group, or protocol
- Long-term biospecimen storage in -80°C freezers and liquid nitrogen vapor phase
- Replacement caps for biorepository and biobank inventory management
- Sample tracking workflows where visual differentiation reduces handling errors
- Cell line, serum, plasma, and DNA/RNA aliquot storage
- Academic, clinical research, and pharmaceutical R&D freezer operations
Quality & Procurement
labsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory, and these caps are Made in USA. Each bag carries lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our procurement team for volume quotes.
Frequently Asked Questions
Are these vial caps sterile?
No. These Flat Top MST™ caps are supplied non-sterile, making them suitable for general cryogenic storage and applications that do not require pre-sterilized closures.
What temperature range do HDPE cryogenic caps tolerate?
HDPE performs well across standard cryogenic storage conditions, including -80°C mechanical freezers and liquid nitrogen vapor phase. For phase-specific guidance, confirm your vial and cap system rating with the manufacturer documentation.
Why is the flat top design useful for cryo storage?
The flat profile allows vials to stack and sit upright securely in cryo boxes and freezer racks, improving space efficiency and reducing tip-over during retrieval from dense storage layouts.
How many caps come in each pack?
Each bag contains 200 fuchsia HDPE caps. The fuchsia color helps teams visually segregate samples and standardize color-coding conventions across freezer inventory.