Sterile HDPE Screw Caps for 15 mL Centrifuge Tubes & Transport Vials — Natural, 1000/Bag (222-3010-02N)
These sterile high-density polyethylene screw caps are designed for use with Caplugs® Evergreen transport vials and standard 15 mL conical centrifuge tubes, supplied in a 1000/Bag format that aligns with the high daily closure demand of specimen processing and aliquoting labs. Manufactured from HDPE for low extractables and a reliable leak-resistant threaded seal, part number 222-3010-02N is an ideal bulk-supply solution for labs that stock caps and vials separately or need replacement closures on hand at all times.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 222-3010-02N |
| Product Type | Screw Cap |
| Material | High-Density Polyethylene (HDPE) |
| Color | Natural |
| Sterility | Sterile |
| Pack Size | 1000/Bag |
| Compatible Tubes/Vials | Caplugs® Evergreen 222-3003/3005/3007 series transport vials; 15 mL conical centrifuge tubes |
| BPA / Phthalate / Latex | BPA-Free, Phthalate-Free, Latex-Free |
| Country of Origin | USA |
Applications
- Primary closure for Caplugs® Evergreen 222-3005 and 222-3007 series specimen transport vials in clinical and reference laboratory workflows
- Re-sealing 15 mL conical centrifuge tubes after centrifugation or sample aliquoting
- Bulk replacement cap inventory for high-volume specimen collection and processing labs
- Separate vial-and-cap procurement programs where closures are stocked independently to streamline inventory management
- Secondary closure for previously opened specimen vials held in long-term storage
- Dual-use stocking strategy — one cap SKU covering both transport vials and 15 mL conical tubes reduces SKU complexity
Compatibility
These caps are thread-compatible with the Caplugs® Evergreen 222-3003, 222-3005, and 222-3007 series transport vials, as well as standard 15 mL conical centrifuge tubes. Laboratories procuring vials separately — such as the 222-3005-08K PPC transport vials (1000/Bag) — can pair them directly with these caps to build flexible, high-volume consumable inventory. Because a single SKU serves both transport vials and 15 mL conicals, procurement teams can consolidate cap ordering across two common tube formats without managing multiple closure part numbers.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent — HDPE inert across pH 2–12 |
| Boric acid (urine preservative) | Excellent — compatible with standard urine transport preservatives |
| Dilute HCl / H₂SO₄ (<10%) | Excellent — compatible with standard acid preservatives |
| Methanol / ethanol (<50%) | Good — short-term contact acceptable |
| Acetonitrile / chlorinated solvents | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen screw caps are produced from FDA-compliant HDPE resin that is BPA-free, phthalate-free, and latex-free, ensuring the cap material does not contribute interfering extractables to sensitive specimen matrices. LabSupplies.com is an authorized dealer of Caplugs® Evergreen consumables and ships from USA inventory, typically same business day for stocking items. Tiered pricing is available for high-volume institutional buyers, clinical networks, and grant-funded research programs.
Frequently Asked Questions
Are these caps sterile straight out of the bag?
Yes — these caps are supplied sterile, making them suitable for use directly in specimen transport, clinical processing, and other workflows where a sterile closure is required without additional preparation.
Which Caplugs® Evergreen vials are these caps compatible with?
These caps are designed to fit the Caplugs® Evergreen 222-3003, 222-3005, and 222-3007 series transport vials, as well as standard 15 mL conical centrifuge tubes. If you are unsure whether your specific vial or tube uses the same thread profile, contact our team for confirmation before switching from your current cap supply.
Why would a lab purchase caps separately instead of buying capped vials?
High-throughput labs often go through caps faster than tubes — for example, when re-sealing aliquots, replacing damaged closures, or working with tubes received without caps. The 1000/Bag format lets procurement managers maintain a dedicated cap buffer without overstocking tubes, and it simplifies inventory tracking when vials and caps are consumed at different rates.
Is HDPE appropriate for urine and biological specimen storage?
Yes. HDPE offers excellent resistance to aqueous biological matrices, including urine containing boric acid preservative, and is chemically inert across a wide pH range. Its low extractable profile and FDA-compliant resin make it a standard material choice for clinical specimen transport closures.