15 mL Conical Centrifuge Tubes, Threaded Cap — Polypropylene Copolymer (PPC), Natural, 1000/Bag
These 15 mL conical-bottom centrifuge tubes are molded from virgin-grade Polypropylene Copolymer (PPC) and feature a threaded closure that delivers a leak-resistant seal for centrifugation, sample storage, and transport. Supplied non-sterile in sealed 1000/Bag packaging, part number 220-2469-08K is well suited for high-throughput clinical and research environments where consistent rotor fit and dimensional uniformity across the entire bag are essential. Lot-to-lot manufacturing controls ensure reliable conical geometry, wall thickness, and cap-thread performance in every unit.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 220-2469-08K |
| Volume | 15 mL |
| Bottom Style | Conical |
| Cap Style | Threaded — leak-resistant seal |
| Material | Polypropylene Copolymer (PPC) |
| Color | Natural |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- Cell culture harvesting — conical tip geometry concentrates cell pellets for complete recovery with minimal dead volume
- Serum and plasma separation — secure threaded closure prevents leakage during centrifugation and subsequent handling
- Protein precipitation and density gradient centrifugation — conical bottom allows precise visualization and recovery of distinct sample layers
- Reagent preparation and storage — threaded seal reduces evaporation and contamination risk during extended storage
- Clinical specimen processing — lot traceability supports compliance in CAP/CLIA/ISO 15189 accredited laboratories
- Sample transport — leak-resistant threaded cap maintains sample integrity from bench to secondary processing location
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol | Compatible |
| Isopropanol | Compatible |
| Acetonitrile | Compatible |
| Aromatic solvents (e.g., toluene, xylene) | Not recommended — use with caution |
| Chlorinated solvents (e.g., chloroform, DCM) | Not recommended |
Quality & Procurement
Made in USA at Caplugs® Evergreen ISO-certified manufacturing facilities, these tubes are produced from FDA-registered, virgin-grade PPC resin that is BPA-free and phthalate-free. Sealed bag packaging maintains product integrity from warehouse receipt through point-of-use, and lot-level quality controls provide the traceability required by accredited clinical and research laboratories. LabSupplies.com is an authorized Caplugs® Evergreen dealer, shipping from USA inventory with tiered pricing available for institutional purchasers, hospitals, and grant-funded research programs.
Frequently Asked Questions
Are these centrifuge tubes sterile?
No — they are supplied non-sterile in 1000/Bag packaging. For applications requiring sterility, downstream sterilization or a sterile-grade product should be considered.
What is the advantage of a threaded cap over a snap-cap design?
A threaded closure provides a more reliable leak-resistant seal under centrifugal force and during sample transport compared with snap-cap formats, reducing the risk of leakage and cross-contamination.
Is Polypropylene Copolymer (PPC) autoclavable?
Polypropylene-based materials are generally considered autoclavable; however, Caplugs® Evergreen does not list a sterility claim for these tubes, so verify your specific sterilization protocol and temperature tolerances before autoclaving production lots.
How do these tubes perform in standard centrifuge rotors?
The 15 mL conical format is dimensionally consistent with standard swing-bucket and fixed-angle rotor positions designed for 15 mL conical tubes. Lot-to-lot dimensional controls on 220-2469-08K support reliable fit across compatible centrifuge platforms.