Screw Caps for 60 mL / 90 mL Specimen Containers — HDPE, Red, 400/Bag (300-5603-R2K)
These replacement screw caps are molded from high-density polyethylene (HDPE) and sized to fit standard 60 mL and 90 mL specimen containers, providing a secure threaded closure for specimen collection and transport. Supplied non-sterile in bulk (400/Bag), the red color supports quick visual identification and color-coded workflow management across high-throughput collection environments. Part number 300-5603-R2K is well suited for clinical, environmental, and research laboratories that process large volumes of capped specimen containers.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-5603-R2K |
| Compatible Container Volume | 60 mL / 90 mL |
| Closure Style | Screw Cap |
| Material | High-Density Polyethylene (HDPE) |
| Color | Red |
| Sterility | Non-Sterile |
| Pack Size | 400/Bag |
| Country of Origin | USA |
Applications
- Recapping or replacing closures on 60 mL and 90 mL specimen containers during collection workflows
- Color-coded specimen management to distinguish sample types, collection points, or processing batches
- Securing liquid specimens during transport between collection sites and the laboratory
- Bulk cap replenishment for high-volume clinical, environmental, or industrial testing labs
- General laboratory container closure where a threaded, leak-resistant seal is required
Material & Chemical Resistance
High-density polyethylene offers broad resistance to aqueous solutions, dilute acids and bases, and many common laboratory reagents, making it a reliable choice for specimen containment. HDPE is more rigid than low-density polyethylene and maintains its dimensional stability under typical ambient storage and transport conditions. Note that HDPE is not recommended for autoclaving; for applications requiring sterilization, select an autoclavable closure material such as polypropylene.
Quality & Procurement
Made in USA, Caplugs® Evergreen specimen container caps are manufactured under ISO 9001 quality management from BPA-free, phthalate-free, latex-free resin. LabSupplies.com is an authorized dealer and ships from USA inventory, typically same business day for stocking items, with tiered pricing available for institutional and high-volume laboratory accounts.
Frequently Asked Questions
Are these screw caps sterile?
No — part number 300-5603-R2K is supplied non-sterile in 400/Bag bulk packaging. If your application requires sterile closures, please contact us to inquire about sterile alternatives.
Can these caps be autoclaved?
HDPE is generally not recommended for autoclaving, as sustained high heat and steam pressure can distort the material. For workflows requiring sterilized closures, consider polypropylene-based caps instead.
Do these caps fit both 60 mL and 90 mL specimen containers?
Yes — the spec line indicates compatibility with both 60 mL and 90 mL specimen containers. We recommend confirming the thread size and diameter of your specific containers against the cap dimensions before placing a large order, as thread profiles can vary by manufacturer.