15 mL Conical Centrifuge Tubes, PPC, Red Cap, Non-Sterile — 1000/Bag
These 15 mL conical centrifuge tubes are constructed from Polypropylene Copolymer (PPC), a material that combines the chemical resistance and toughness of polypropylene with improved impact resistance for demanding centrifugation workflows. Supplied unassembled with red caps for color-coded specimen and batch identification, each bag contains 1000 tubes — making part number 240-2469-R80 an efficient bulk procurement choice for high-throughput clinical and research laboratories. The conical bottom geometry maximizes pellet recovery, and the natural (clear) tube body allows direct visual inspection of contents.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-2469-R80 |
| Volume | 15 mL |
| Tube Type | Conical Centrifuge Tube |
| Material | Polypropylene Copolymer (PPC) |
| Tube Color | Natural (Clear) |
| Cap Color | Red |
| Graduations | None |
| Assembly | Unassembled (cap included) |
| Sterility | Non-Sterile |
| BPA / Phthalate Free | Yes |
| Pack Size | 1000/Bag |
| Country of Origin | USA |
Applications
- Urine specimen processing and clinical chemistry sample preparation
- Cell pelleting and centrifugation workflows requiring efficient conical-bottom recovery
- Serum and plasma separation
- PCR, DNA, and RNA isolation sample preparation
- Protein precipitation and SDS-PAGE / western blot sample preparation
- Color-coded specimen batching and visual workflow differentiation using the red cap
- High-volume bulk liquid handling in CAP/CLIA-accredited and ISO 15189 laboratories
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol | Compatible |
| Acetonitrile | Caution — limited contact only |
| Ethyl acetate | Not recommended |
| Aromatic solvents (toluene, xylene, etc.) | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen conical tubes are manufactured from BPA-free, phthalate-free Polypropylene Copolymer resin under ISO 9001 quality management, supporting lot traceability requirements for CAP/CLIA-accredited and ISO 15189 laboratories. LabSupplies.com is an authorized dealer and ships from USA inventory, with tiered volume pricing available for institutional, hospital, and grant-funded procurement teams. The unassembled 1000/Bag format keeps per-unit cost low for facilities running high daily tube volumes.
Frequently Asked Questions
Are these centrifuge tubes sterile?
No — they are supplied non-sterile and unassembled (cap included). For workflows that do not require sterility, such as routine clinical chemistry, protein precipitation, or many molecular biology applications, non-sterile tubes are the standard and more economical choice.
What is the advantage of PPC over standard polypropylene or polystyrene for centrifuge tubes?
Polypropylene Copolymer (PPC) offers greater impact resistance than standard polypropylene and substantially broader chemical resistance than polystyrene — making it a better fit for workflows involving organic solvents, acidic or basic reagents, and aggressive biological buffers that would degrade or craze polystyrene tubes.
Why do these tubes have a red cap?
The red cap enables rapid visual color-coding at the bench, allowing staff to differentiate specimen batches, patient groups, or workflow stages without labeling every individual tube. Many labs use cap color as a first-line sorting system to reduce processing errors in high-throughput settings.
Does the unassembled format affect how the tubes are used?
Unassembled simply means the caps and tubes are packed separately, which reduces shipping volume and per-unit cost. Assembly takes seconds at the bench and does not affect tube performance or seal integrity during centrifugation.