60 mL / 90 mL Specimen Container Screw Caps — HDPE, Green, 500/Bag (300-5603-G20)
Designed as replacement or spare closures for standard 60 mL and 90 mL specimen containers, these screw caps are molded from high-density polyethylene (HDPE) in a bright green color for easy visual identification during sample handling and storage. Supplied non-sterile in bulk (500/Bag), part number 300-5603-G20 is well suited for high-throughput specimen collection workflows, laboratory sample banking, and general-purpose container closure needs.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-5603-G20 |
| Compatible Container Volume | 60 mL / 90 mL |
| Closure Style | Screw Cap |
| Material | High-Density Polyethylene (HDPE) |
| Color | Green |
| Sterility | Non-Sterile |
| Pack Size | 500/Bag |
| Country of Origin | USA |
Applications
- Replacement closures for 60 mL and 90 mL specimen collection containers
- Color-coded sample organization and differentiation across specimen types or collection sites
- Sample banking and long-term ambient or refrigerated storage
- Bulk re-capping of containers during high-volume specimen processing workflows
- General-purpose laboratory container closure where a screw-thread seal is required
Material & Chemical Resistance
High-density polyethylene offers good general chemical resistance to aqueous solutions, dilute acids and bases, and many common laboratory reagents, making it a reliable choice for a wide range of specimen types and storage conditions. HDPE is a rigid, low-moisture-absorption material that maintains its structure well under typical laboratory handling and refrigerated storage temperatures. Note that HDPE is not recommended for autoclaving, and compatibility should be verified before use with concentrated oxidizing acids, aromatic solvents, or halogenated solvents.
Quality & Procurement
Made in USA, Caplugs® Evergreen specimen container screw 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 grant-funded laboratories.
Frequently Asked Questions
Are these screw caps sterile?
No — part number 300-5603-G20 is supplied non-sterile in 500/Bag bulk packaging, which is appropriate for general specimen handling and storage applications that do not require sterile closures.
Will these caps fit containers other than 60 mL and 90 mL sizes?
These caps are specified for use with 60 mL and 90 mL specimen containers. Compatibility with other container sizes or brands depends on thread finish and diameter; it is advisable to verify fit with your specific containers before placing a bulk order.
Can HDPE screw caps be used for frozen sample storage?
HDPE maintains reasonable performance at typical refrigerated and short-term freezer temperatures used for general specimen storage; however, suitability for ultra-low temperature or long-term cryogenic freezing should be confirmed for your specific application, as prolonged exposure to extreme cold can affect polymer flexibility and seal integrity.