Caplugs® Evergreen 15 mL Conical Centrifuge Tubes, Sterile, PPC (Polypropylene Copolymer), Natural with Green Screw Caps — 500/Pack
The Caplugs® Evergreen 15 mL Conical Centrifuge Tubes are sterile, natural-clarity PPC tubes fitted with leak-resistant green screw caps, supplied assembled at 50/Tray. Engineered for reliable performance in cell pelleting, sample collection, and reagent aliquoting, these tubes pair optical clarity for visual reads with the rigidity needed for routine benchtop centrifugation.
Technical Specifications
| Product Type | Conical Centrifuge Tubes |
| Volume/Size | 15 mL |
| Material | Polypropylene Copolymer (PPC), Natural |
| Closure/Cap | Green Screw Cap, Assembled |
| Graduation | Molded graduations with marking spot |
| Sterility | Sterile |
| Pack Size | 500/Pack (50/Tray Assembled) |
| Country of Origin | USA |
Applications
- Pelleting mammalian cells and microbial cultures during low- to medium-speed spins
- Collecting, transporting, and storing biological and clinical samples
- Aliquoting media, buffers, and reagents for routine bench protocols
- Protein and nucleic acid sample preparation upstream of assays
- Serial dilution and reagent staging in tube-rack workflows
- Short-term sample storage requiring a secure, leak-resistant seal
Chemical Resistance
| Reagent Class | Compatibility |
| Aqueous buffers (PBS, TBS, saline) | Excellent |
| Dilute acids and bases | Good to Excellent |
| Alcohols (ethanol, isopropanol) | Good |
| Aliphatic hydrocarbons | Good |
| Aromatic / chlorinated solvents | Limited — test before use |
| Strong oxidizers | Limited — test before use |
Resistance reflects general PPC behavior; validate with your specific reagents, concentrations, and temperatures before scaling.
Quality & Procurement
labsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory, and these tubes are Made in USA. Packs carry lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact us for volume quotes on SKU 222-2469-G80.
Frequently Asked Questions
What is the maximum recommended RCF for these 15 mL tubes?
PPC conical tubes of this format are typically rated for routine bench centrifugation in the low- to medium-speed range. Always confirm against your rotor and centrifuge manufacturer's guidance for the 15 mL conical format before use.
Are these tubes supplied sterile and ready to use?
Yes. The tubes are sterile and supplied assembled with their green screw caps, ready for immediate use in sterile sample handling and culture workflows.
What does "PPC" mean and why does it matter?
PPC is polypropylene copolymer, a resin offering good clarity and impact strength. The exact resin grade matters for chemical resistance and centrifugation performance, so this listing specifies PPC rather than a broader polypropylene designation.
How many tubes are in a pack?
Each pack contains 500 tubes, supplied as 50/Tray assembled. The order unit and price are per pack of 500.