30 mL Conical Bottom Centrifuge Tubes, Threaded Cap — PPC, Green, 1000/Bag (240-3928-G80)
These 30 mL polypropylene copolymer (PPC) conical centrifuge tubes feature a threaded, leak-resistant cap for secure sealing during centrifugation, storage, and sample transport. Supplied non-sterile in bulk 1000/Bag packaging, part number 240-3928-G80 is manufactured in green PPC for straightforward visual identification on the bench. The conical bottom geometry concentrates pellets and precipitates at the tube tip, enabling complete recovery with minimal dead volume after centrifugation.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-3928-G80 |
| Volume | 30 mL |
| Bottom Style | Conical |
| Cap Style | Threaded — leak-resistant seal |
| Material | Polypropylene Copolymer (PPC) |
| Color | Green |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- Cell culture harvesting — conical tip concentrates cell pellets for efficient recovery after centrifugation
- Serum and plasma separation — secure threaded closure prevents leakage during spin and subsequent storage
- Protein precipitation and sample cleanup in proteomics and analytical workflows
- Density gradient centrifugation requiring reliable pellet concentration at the tube tip
- Clinical specimen processing and transport where a leak-resistant seal is required
- Reagent preparation and intermediate sample storage in research and biotech laboratories
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol | Compatible |
| Isopropanol | Compatible |
| Acetonitrile | Compatible |
| Aromatic / chlorinated solvents | Limited — not recommended for prolonged contact |
Quality & Procurement
Made in USA at Caplugs® Evergreen ISO-certified manufacturing facilities using virgin-grade, FDA-registered polypropylene copolymer resin. These tubes are BPA-free and phthalate-free, and lot-to-lot dimensional consistency ensures reliable fit in standard centrifuge rotor positions across every bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered volume pricing available for clinical laboratories, research institutions, and biotech procurement teams.
Frequently Asked Questions
Are these centrifuge tubes sterile?
No — they are supplied non-sterile in 1000/Bag bulk packaging. For applications requiring sterility, additional decontamination or a sterile-grade product should be considered.
Why are these tubes green rather than natural/clear?
The green color of part 240-3928-G80 allows quick visual differentiation from other tube sizes or formats on a busy bench, reducing the chance of picking the wrong tube during high-throughput workflows.
Are the tubes autoclavable?
Polypropylene copolymer (PPC) has good heat tolerance and is generally compatible with autoclaving; however, Caplugs® Evergreen does not certify these non-sterile tubes for repeated autoclave cycles, so validation for your specific process is recommended.
What centrifuge rotors are these compatible with?
The 30 mL conical format fits standard swing-bucket and fixed-angle rotor positions designed for this tube size. Always verify rotor adapter compatibility with your specific centrifuge model and confirm the maximum rated RCF before use.