15 mL Conical Centrifuge Tubes with Natural HDPE Screw Caps — PPC, Unassembled, 1,000/Bag (240-2469-080)
These 15 mL conical centrifuge tubes pair a precision-molded Polypropylene Copolymer (PPC) tube body with a natural High-Density Polyethylene (HDPE) threaded screw cap, supplied unassembled in a 1,000/Bag bulk format for maximum workflow flexibility. The standard 17 × 120 mm conical geometry fits 15 mL rotor positions across all major centrifuge platforms, including Eppendorf® and Beckman Coulter® instruments. Supplied non-sterile, these tubes are an economical choice for high-throughput clinical processing, cell pelleting, and sample storage where pre-sterilization is not required.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-2469-080 |
| Tube Volume | 15 mL |
| Tube Dimensions | 17 × 120 mm |
| Tube Bottom Geometry | Conical |
| Tube Material | Polypropylene Copolymer (PPC) |
| Tube Color | Natural (semi-transparent) |
| Cap Material | High-Density Polyethylene (HDPE) |
| Cap Color | Natural |
| Cap Type | Threaded Screw Cap |
| Assembly State | Unassembled — 1,000 tubes + 1,000 caps per Bag |
| Pack Size | 1,000/Bag |
| Sterility | Non-Sterile |
| BPA / Phthalates | BPA-free; no phthalate plasticizers |
| Country of Origin | USA |
Applications
- Conical centrifugation and cell pelleting at standard clinical and research g-forces
- Serum and plasma separation in clinical laboratories and hospitals
- Sample storage and freeze-thaw cycling — PPC's elevated impact resistance reduces cracking under repeated thermal stress
- High-throughput specimen processing where bulk, unassembled tube-and-cap pairs reduce per-unit cost
- Barcode and external-label workflows — natural caps and semi-transparent tube bodies allow easy sample identification without removing caps
- Cell culture media and reagent aliquoting requiring a positive torque-seal closure
Compatibility
The 17 × 120 mm conical format of these tubes fits standard 15 mL rotor positions on major centrifuge platforms including Eppendorf® (5810R and 5804R with A-4-81 swing-bucket rotor) and Beckman Coulter® instruments, as well as Thermo Fisher Sorvall™ models such as the ST16R, Legend X1R, and CL10 using the Fiberlite™ F15-6×100y rotor. Always confirm the maximum rated g-force and rotor capacity in your specific instrument manual before committing to a large-volume purchase. For laboratories needing color-coded cap options or alternative tube materials, related family members include a green-cap PPC variant (240-2469-G80) and Polystyrene tube options with both natural and green caps (240-2448-050 and 240-2448-G50), enabling single-vendor procurement across tube bodies and cap colors.
Chemical Resistance
| Reagent / Condition | Tube Body (PPC) | Cap (HDPE) |
|---|---|---|
| Aqueous buffers and saline | Excellent | Excellent |
| Dilute acids and bases | Excellent | Excellent |
| Ethanol (<70%) | Good — short-term contact | Good — short-term contact |
| Isopropanol (IPA) | Good — short-term contact | Good — short-term contact |
| Acetone | Not recommended | Not recommended |
| Chloroform / chlorinated solvents | Not recommended | Limited — verify before use |
| Aromatic solvents (toluene, xylene) | Not recommended | Not recommended |
| Freeze-thaw cycling | Excellent — PPC offers elevated low-temperature impact resistance vs. standard PP | Good |
Quality & Procurement
Made in USA, these Caplugs® Evergreen centrifuge tubes are manufactured from virgin, BPA-free, phthalate-free resin under ISO 9001 quality management. The HDPE cap thread is matched to the PPC tube geometry to deliver consistent torque-to-seal performance across every unit in the 1,000-count Bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered pricing available for institutional purchasers, hospital systems, and grant-funded research laboratories.
Frequently Asked Questions
Are these centrifuge tubes sterile?
No — they are supplied non-sterile. The unassembled, bulk 1,000/Bag format is designed for general clinical and research workflows where sterilization is performed downstream or is not required.
Why are the tubes and caps supplied unassembled?
Unassembled packaging gives labs the flexibility to label or barcode tubes before capping, sort by sample type, and assemble at the point of use — a significant advantage in high-throughput environments processing large batches of specimens.
What is the advantage of Polypropylene Copolymer (PPC) over standard polypropylene or polystyrene?
PPC delivers improved impact resistance and better low-temperature performance compared to standard PP, which reduces tube cracking during freeze-thaw cycling and repeated centrifugation. Compared to polystyrene, PPC is more resistant to common laboratory reagents including dilute alcohols and aqueous buffers.
Will these tubes fit my centrifuge rotor?
The 17 × 120 mm conical format is the industry-standard 15 mL geometry and seats in rotor positions designed for this tube size on platforms such as Eppendorf® and Beckman Coulter® instruments. Always verify the maximum rated g-force and rotor well dimensions in your instrument manual — rotor adapters may be required on some models — before placing a large-volume order.