Caplugs® Evergreen Tethered Vial Caps, HDPE, 5 Colors — 200/Bag
The Caplugs® Evergreen Tethered Vial Caps are molded HDPE closures with an integrated leash that keeps caps attached to the vial during open-handling, eliminating lost lids and mismatched closures. Ideal for sample aliquoting, color-coded specimen tracking, and high-throughput benchwork where caps are repeatedly opened and reclosed at the bench.
Technical Specifications
| Product Type | Tethered Vial Caps |
| Volume/Size | Standard vial closure (fits 300-series Evergreen vials) |
| Material | High-Density Polyethylene (HDPE) |
| Closure/Cap | Tethered (leash-attached) snap cap |
| Sterility | Non-sterile |
| Pack Size | 200 caps per bag |
| Country of Origin | USA |
Available Colors
| Yellow | 300-3918-TY20 | $18.73 |
| White | 300-3918-TW20 | $18.73 |
| Lavender | 300-3918-TL20 | $18.73 |
| Green | 300-3918-TG20 | $18.73 |
| Orange | 300-3918-TE20 | $18.73 |
Applications
- Color-coding patient or study samples across multiple sample sets
- Aliquoting reagents and standards into labeled storage vials
- Specimen banking where caps are opened and reclosed repeatedly
- Sorting workflows by collection date, technician, or assay panel
- Preventing cross-contamination from misplaced or swapped lids
- Cold-chain and freezer storage with secure tethered closure
Quality & Procurement
labsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory. Each bag carries a lot number to support traceability requirements for CAP-, CLIA-, and ISO 15189-accredited laboratories. These caps are made in the USA. Institutional and grant-funded tiered pricing is available — contact our procurement desk for volume quotes across all five colors.
Frequently Asked Questions
Do these caps stay attached to the vial?
Yes. Each cap has an integrated tether (leash) that keeps it joined to the vial during handling, preventing dropped or swapped lids while leaving the opening fully accessible.
What material are the caps molded from?
They are molded from high-density polyethylene (HDPE), a chemically stable polymer well suited to aqueous samples and standard freezer storage.
Are the caps supplied sterile?
No. These caps are supplied non-sterile and packaged 200 per bag. Validate any required cleaning or sterilization method against your internal protocols before use.
Can I order multiple colors for color-coding?
Yes. Five colors are available — Yellow, White, Lavender, Green, and Orange — each as a separate 200/bag SKU, enabling visual sorting by study, date, or workflow.