Caplugs® Evergreen Lab Caps, HDPE & PP — 2 Materials, 100/Bag & 1000/Bag
The Caplugs® Evergreen Lab Caps deliver dependable closure performance across two material grades for routine sample storage, specimen transport, and reagent containment. Choose HDPE for moisture-resistant bulk runs or PP for higher chemical tolerance, both engineered for consistent fit on standard laboratory vials and containers.
Technical Specifications
| Product Type | Laboratory closure caps |
| Size/Format | Two part-specific cap formats (300-3531-K20, 240-3800-K30) |
| Material | HDPE (high-density polyethylene) or PP (polypropylene) |
| Closure/Cap | Push-fit / snap closure |
| Sterility | Non-sterile |
| Pack Size | HDPE: 1000/bag · PP: 100/bag |
| Country of Origin | USA |
Available Materials
| HDPE — 1000/Bag | 3003531K20E1 | $101.93 |
| PP — 100/Bag | 2403800K30E1 | $40.48 |
Applications
- Sealing sample and specimen vials for cold or ambient storage
- Closing reagent containers to limit evaporation and contamination
- Securing tubes during transport between bench and storage areas
- Archiving aliquots in biorepository and biobank workflows
- Capping containers in clinical and diagnostic specimen handling
- Protecting fill openings in QC and stability-testing operations
Quality & Procurement
Manufactured in the USA and supplied through labsupplies.com, an authorized Caplugs® Evergreen dealer shipping from US inventory. Each bag carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available on request for high-volume procurement.
Frequently Asked Questions
What is the difference between the HDPE and PP caps?
HDPE offers strong moisture resistance and ships in a 1000/bag bulk format, while PP provides broader chemical tolerance and ships in a 100/bag format. Material choice should match your reagent and storage conditions.
How are these caps packaged?
The HDPE cap (300-3531-K20) is sold 1000 per bag; the PP cap (240-3800-K30) is sold 100 per bag. Prices listed are per-pack.
Are the caps supplied sterile?
No. These caps ship non-sterile. Users requiring sterile conditions should validate an appropriate in-house sterilization or decontamination method for the chosen material.
Can these caps support accredited-lab traceability?
Yes. Each bag carries a lot number, enabling documentation for CAP-, CLIA-, and ISO 15189-accredited environments where traceability of consumables is required.