Caplugs® Evergreen 15 mL Unthreaded Conical Centrifuge Tubes, Polystyrene (PS), Natural, Non-Sterile, 125/Box
The 15 mL unthreaded conical centrifuge tubes from Caplugs® Evergreen are molded from clear polystyrene (PS) for high optical clarity, making them ideal for visual inspection of pellets, supernatant separation, and routine specimen handling at the bench. The natural, untinted resin supports reading menisci and band positions without staining the sample.
Technical Specifications
| Product Type | Conical Centrifuge Tube (unthreaded, capless) |
| Volume/Size | 15 mL |
| Material | Polystyrene (PS) |
| Closure/Cap | None (unthreaded tube) |
| Color | Natural |
| Sterility | Non-Sterile |
| Pack Size | 125/Box |
| Country of Origin | USA |
Applications
- Low-speed centrifugation and pelleting of cell suspensions or precipitates
- Visual inspection of pellet, band, and supernatant boundaries through clear PS walls
- Aliquoting and short-term holding of aqueous reagents and buffers
- Sample preparation for routine clinical and research bench workflows
- Dilution series and reagent mixing where optical clarity aids reading
- General specimen transfer in teaching and high-throughput sorting tasks
Quality & Procurement
labsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory, and these tubes are Made in USA. Boxes carry lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our team for volume quotes on standing orders.
Frequently Asked Questions
Do these 15 mL tubes come with caps?
No. These are unthreaded, capless conical tubes. They are intended for workflows using stoppers, plate sealers, or capless racking rather than screw-cap closure.
What material are these centrifuge tubes made from?
They are molded from polystyrene (PS), which offers high optical clarity for inspecting pellets and supernatants. PS is rigid but less chemically and thermally robust than polypropylene, so confirm reagent compatibility before use.
Are these tubes sterile?
No. These tubes are supplied non-sterile, which suits general bench work, reagent handling, and applications that do not require an aseptic vessel.
How many tubes are in each pack?
Each box contains 125 tubes (125/Box). The list price shown is per box.