Caplugs® Evergreen 15 mL Conical Centrifuge Tubes, Sterile Polystyrene (PS), Natural with Green Caps — 50/Tray, 500/Pack
The Caplugs® Evergreen 15 mL Conical Centrifuge Tubes deliver clear polystyrene (PS) clarity and sterile, racked convenience for sample collection, cell pelleting, and reagent aliquoting. Each natural-color conical vessel pairs with a leak-resistant green screw cap, supplied assembled and ready to load. Trays of 50 streamline bench workflows in clinical, research, and QC labs.
Technical Specifications
| Product Type | Conical Centrifuge Tubes |
| Volume/Size | 15 mL |
| Material | Polystyrene (PS) |
| Closure/Cap | Green Screw Cap, assembled |
| Color | Natural vessel with green cap |
| Sterility | Sterile |
| Pack Size | 50/Tray (500/Pack) |
| Country of Origin | USA |
Applications
- Cell pelleting and resuspension in mammalian and microbial culture workflows
- Sample collection, transport, and short-term storage of biological specimens
- Reagent and buffer aliquoting for assay setup
- Protein and nucleic acid preparation steps requiring optical clarity
- Clinical and diagnostic specimen processing in CLIA-regulated settings
- General benchtop centrifugation up to validated rated g-forces
Chemical Resistance
| Reagent Class | Compatibility (Polystyrene) |
| Aqueous buffers and saline | Excellent |
| Dilute acids and bases | Good |
| Alcohols (ethanol, isopropanol) | Limited — may cause crazing with prolonged exposure |
| Ketones (acetone) | Not recommended |
| Aromatic and chlorinated solvents | Not recommended |
| Aldehydes (formalin, dilute) | Good |
Quality & Procurement
labsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory, with these tubes proudly Made in USA. Each tray and case carries lot numbers that 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
Are these 15 mL conical tubes made of polystyrene or polypropylene?
These tubes are molded from polystyrene (PS), giving high optical clarity for visual inspection of pellets and contents. Note that PS has different chemical and centrifugation tolerances than polypropylene, so verify suitability for your solvents and rated speeds.
Are the tubes supplied sterile and assembled with caps?
Yes. Each tube ships sterile with its green screw cap assembled and ready to use, packaged 50 per tray and 500 per pack for organized loading at the bench.
What does 50/Tray, 500/Pack mean for ordering?
The unit of sale is one pack of 500 tubes, organized into trays of 50. The listed price is per pack of 500.
Can these tubes be used with organic solvents?
Polystyrene tolerates aqueous buffers and dilute acids/bases well but is not recommended for ketones, aromatic, or chlorinated solvents. Review the chemical resistance table and validate for your specific protocol before use.