15 mL Centrifuge Tube & Transport Vial Screw Caps — HDPE, Green, 1000/Bag (300-3010-G2N)
These green High-Density Polyethylene (HDPE) screw caps provide leak-free closure for Caplugs® Evergreen 15 mL centrifuge tubes and 7 mL transport vials (240-3007 / 240-3010 series), supplied non-sterile in bulk 1000/Bag packaging for high-volume clinical, research, and biorepository programs. Threaded engagement delivers a positive seal that meets IATA P650 requirements for primary packaging of biological specimens during air and courier transport. With autoclave compatibility at 121°C and cryogenic stability to -80°C, part number 300-3010-G2N covers the full thermal range from biobank archival to sterile cell-culture workflows.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-3010-G2N |
| Cap Type | Screw cap — threaded tube engagement |
| Material | High-Density Polyethylene (HDPE) |
| Color | Green |
| Thread / Neck Size | Standard centrifuge tube thread — 24 mm neck |
| Tube Compatibility | 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
- Biological specimen transport: Screw-thread seal meets IATA P650 primary packaging requirements for human specimens shipped by air or courier, including serum, plasma, and urine.
- Biobank and biorepository archival: HDPE cryostability at -80°C makes these caps suitable for replacing or restoring closures on archived centrifuge tubes and transport vials during long-term specimen storage programs.
- Clinical color-coding workflows: Green caps are widely used in high-volume clinical laboratories to designate specimen categories — such as urine, environmental samples, or specific diagnostic batches — enabling rapid visual routing without relabeling.
- Cell culture and pathogen propagation: Autoclave compatibility at 121°C allows labs to pre-sterilize caps for use with capped centrifuge tubes in aseptic workflows.
- Replacement capping programs: Ideal for restocking tube caps after transport or specimen retrieval when original closures are damaged or discarded.
Compatibility
These screw caps are designed to fit Caplugs® Evergreen 15 mL centrifuge tubes and the 240-3007 / 240-3010 family of 7 mL transport vials, engaging via a standard 24 mm centrifuge tube thread. The higher crystallinity of HDPE relative to LDPE delivers the thread-wall rigidity needed for consistent torque engagement, reliable cap retention during centrifugation, and dimensional stability through repeated freeze-thaw cycling. Before substituting these caps for closures from other manufacturers, verify that your tubes share the same 24 mm thread standard.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Serum, plasma, urine | Excellent |
| Standard clinical preservatives | Excellent |
| Dilute acids and bases | Good |
| Alcohols (ethanol, isopropanol) | Good — short-term contact |
| Chlorinated solvents (chloroform, DCM) | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
| Autoclave (121°C / 15 psi) | Compatible |
| Cryogenic storage (-80°C) | Compatible |
Quality & Procurement
Made in USA, these Caplugs® Evergreen screw caps are manufactured in California from BPA-free, phthalate-free HDPE resin, ensuring no cap leaching into specimen contents during storage or transport — a critical consideration for biorepository programs archiving irreplaceable sample volumes. LabSupplies.com is an authorized dealer of Caplugs® Evergreen consumables and ships from USA inventory, typically same business day for stocking items. Volume and institutional pricing is available for high-throughput clinical laboratories, hospital systems, and grant-funded research programs.
Frequently Asked Questions
Are these caps sterile?
No — the 300-3010-G2N is supplied non-sterile. However, the caps are autoclavable at 121°C / 15 psi, so labs requiring sterile closures can autoclave them before use.
Do these caps meet IATA P650 requirements for shipping patient specimens?
Yes — the threaded screw engagement provides the positive, leak-free primary container seal required under IATA P650 for biological specimens transported by air and courier. Always verify that the complete primary container assembly — tube, cap, and any secondary packaging — meets all applicable regulatory requirements for your specific specimen type and route.
Will these caps fit centrifuge tubes from other manufacturers?
These caps are designed and verified for Caplugs® Evergreen 15 mL centrifuge tubes and the 240-3007 / 240-3010 transport vial family, which share a standard 24 mm centrifuge tube thread. They may be compatible with other brands using the same thread standard, but procurement teams should confirm thread dimensions with their specific tube supplier before switching from OEM caps.
Is green the only color available?
No — the 300-3010 HDPE screw cap is also available in Natural (300-3010-02N), Blue (300-3010-B2N), and Orange (300-3010-E2N), allowing laboratories to implement a multi-color specimen-type or batch-coding system across a single tube platform.