Screw Caps for 60 mL / 90 mL Specimen Containers — HDPE, Green, 400/Bag (300-5603-G2K)
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 routine specimen collection and transport workflows. Supplied non-sterile in bulk (400/Bag), the green color coding supports quick visual identification and organization across multiple container types in busy laboratory and clinical environments. Part number 300-5603-G2K is a practical, high-volume procurement option for labs requiring reliable closure components at scale.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-5603-G2K |
| Compatible Container Volumes | 60 mL / 90 mL |
| Closure Type | Screw Cap |
| Material | High-Density Polyethylene (HDPE) |
| Color | Green |
| 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 sample collection workflows
- Color-coded container management for quick visual differentiation of specimen types or processing batches
- Securing aqueous biological specimens and liquid samples during transport and storage
- High-throughput clinical and research settings requiring reliable bulk closure inventory
- General laboratory liquid containment where a threaded screw cap closure is required
Material & Chemical Resistance
High-density polyethylene (HDPE) offers broad resistance to aqueous solutions, dilute acids and bases, and many common laboratory reagents, making it a dependable choice for biological specimen containment. HDPE is more rigid than low-density polyethylene and maintains its structural integrity under normal storage and transport conditions. Note that HDPE is not recommended for autoclaving and may be permeated or swelled by certain organic solvents, including halogenated and aromatic compounds; it is best suited for aqueous and mildly aggressive sample types.
Quality & Procurement
Made in USA, Caplugs® Evergreen specimen container caps are manufactured under ISO 9001 quality management from BPA-free, phthalate-free, latex-free HDPE 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 procurement accounts.
Frequently Asked Questions
Are these screw caps sterile?
No — they are supplied non-sterile in 400/Bag bulk packaging. If your application requires sterile closures, please contact us to inquire about sterile alternatives.
Will these caps fit containers other than 60 mL and 90 mL sizes?
These caps are specified for 60 mL and 90 mL specimen containers. Compatibility with other container sizes depends on matching thread dimensions; we recommend verifying the thread size and diameter of your existing containers before ordering.
Is HDPE suitable for storing biological specimens and common lab reagents?
Yes — HDPE performs well with aqueous biological specimens, dilute acids and bases, and many standard laboratory buffers. It is not recommended for use with halogenated or aromatic organic solvents, and it is not autoclavable.