15 mL Centrifuge Tube & Transport Vial Screw Caps — HDPE, Orange, 1000/Bag (300-3010-E2N)
These orange High-Density Polyethylene (HDPE) screw caps are engineered to seal Caplugs® Evergreen 15 mL centrifuge tubes and 7 mL transport vials with a positive, leak-free threaded closure. Supplied non-sterile in bulk (1000/Bag), they satisfy IATA P650 primary packaging requirements for biological specimen transport while remaining compatible with cryogenic storage at −80°C and autoclaving at 121°C — covering the full handling chain from collection through long-term biorepository archival.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-3010-E2N |
| Cap Type | Screw cap — threaded tube engagement |
| Material | High-Density Polyethylene (HDPE) |
| Color | Orange |
| Thread | Standard centrifuge tube thread — 24 mm neck |
| Compatible Tubes / Vials | Caplugs® Evergreen 15 mL centrifuge tubes; 240-3007 / 240-3010 7 mL transport vials |
| IATA P650 Compliance | Yes — leak-free primary container seal for biological specimen transport |
| Cryogenic Storage | Compatible to −20°C and −80°C |
| Autoclave Compatibility | Yes — 121°C / 15 psi |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| BPA / Phthalates | BPA-free; no phthalate plasticizers |
| Country of Origin | USA (California) |
Applications
- Replacement or bulk capping of Caplugs® Evergreen 15 mL centrifuge tubes in clinical and research workflows
- Sealing 240-3007 and 240-3010 7 mL transport vials for IATA P650-compliant air and courier shipment of biological specimens
- High-visibility STAT and priority specimen routing — orange caps allow staff to identify urgent samples in processing racks instantly, without secondary labeling
- Cryogenic biobank and biorepository programs: recapping archived centrifuge tubes or restoring transport vial closures after specimen retrieval at −20°C or −80°C
- Cell culture and pathogen propagation workflows requiring autoclaved caps (121°C / 15 psi pre-sterilization cycle)
- Long-term storage of serum, plasma, and urine specimens where cap chemical inertness guards against leaching into precious archived volumes
Compatibility
The 300-3010-E2N is designed to fit the standard 24 mm threaded neck of Caplugs® Evergreen 15 mL centrifuge tubes and the 240-3007 / 240-3010 family of 7 mL transport vials. The threaded screw engagement provides the torque retention needed for centrifugation and the leak-tight primary seal required under IATA P650 for biological specimen transport. Laboratories sourcing replacement caps for high-volume tube programs will find these caps a direct fit for those Caplugs® Evergreen tube lines. If you use centrifuge tubes or transport vials from a different manufacturer, verify neck thread dimensions before ordering.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Serum, plasma, urine | Excellent |
| Standard clinical preservatives | Excellent |
| Dilute acids and bases | Good |
| Alcohols (short-term contact) | Good |
| Chlorinated solvents (chloroform, DCM) | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
| Autoclaving (121°C / 15 psi) | Compatible |
| Cryogenic storage (−80°C) | Compatible |
Quality & Procurement
Made in USA, these Caplugs® Evergreen screw caps are manufactured in California under ISO 9001 quality management from BPA-free, phthalate-free HDPE resin. HDPE's higher crystallinity versus LDPE delivers the thread-wall rigidity required for consistent torque engagement, centrifuge cap retention, and dimensional stability through repeated freeze-thaw cycling — properties that matter in both clinical logistics and long-term biorepository programs. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, with volume pricing available for institutional procurement, grant-funded laboratories, and high-throughput specimen processing programs.
Frequently Asked Questions
Are these caps sterile out of the bag?
No — they are supplied non-sterile. However, HDPE is autoclave-compatible at 121°C / 15 psi, so labs that need sterile caps can process them in-house before use in cell culture or pathogen propagation workflows.
Will these caps fit centrifuge tubes from other manufacturers?
They are specifically designed and validated for Caplugs® Evergreen 15 mL centrifuge tubes and 240-3007 / 240-3010 7 mL transport vials. Before using them on tubes from other brands, confirm that the neck thread dimensions match the standard 24 mm centrifuge tube thread — thread pitch and diameter can vary between manufacturers.
Are these caps suitable for IATA-regulated specimen shipments?
Yes. The screw-thread engagement provides the leak-free primary container seal required under the IATA P650 standard for transport of biological substances, making them appropriate for air and courier shipment of human specimens when used with compatible Caplugs® Evergreen tubes or transport vials.
Why order orange caps rather than natural or another color?
Orange is widely used in clinical and laboratory settings as a high-visibility marker for STAT or priority specimens. Capping urgent samples with orange eliminates the need for secondary priority labels in specimen processing racks, accelerating triage and reducing handling errors in busy lab environments. Caplugs® Evergreen also offers the same 300-3010 cap in Natural, Blue, and Green for labs that use color-coding across multiple specimen categories.