30 mL Freestanding Centrifuge Tubes, Polypropylene, Red Cap — Caplugs® Evergreen 240-3530-R30
These 30 mL polypropylene freestanding centrifuge tubes feature a flat-bottom base that stands upright without a rack, molded-in graduations at every 5 mL, and a red cap for color-coded specimen identification. Supplied non-sterile and unassembled in 1000/Bag format, part number 240-3530-R30 is rated to 10,000 × g — making these tubes suitable for a broad range of centrifugation workflows in clinical, research, and molecular diagnostic laboratories.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-3530-R30 |
| Tube Type | Freestanding Centrifuge Tube |
| Volume | 30 mL |
| Maximum RCF | 10,000 × g |
| Graduations | Molded-in, every 5 mL |
| Base Style | Freestanding Flat Bottom |
| Cap Color | Red |
| Tube Body Color | Natural |
| Material | Polypropylene (PP) |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag (Unassembled) |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- High-speed centrifugation up to 10,000 × g in clinical chemistry, molecular diagnostics, and microbiology workflows
- Nucleic acid extraction (DNA/RNA) requiring polypropylene chemical resistance and precise 30 mL volume capacity
- Cell culture and protein purification protocols where a larger-format tube is required
- Specimen processing, aliquoting, and bench-top staging — the freestanding flat-bottom base eliminates the need for an external rack
- Color-coded specimen management systems: the red cap aligns with standard clinical laboratory serum-type or STAT specimen conventions
- CAP, CLIA, and ISO 15189-compliant workflows benefiting from lot-numbered, traceable consumables
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids and bases | Excellent |
| Alcohols (ethanol, isopropanol) | Good — short-term contact |
| Ketones (acetone) | Limited — short-term contact only |
| Chlorinated solvents (chloroform, DCM) | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen centrifuge tubes are manufactured from BPA-free, phthalate-free polypropylene resin and are lot-numbered to support traceability requirements under CAP, CLIA, and ISO 15189 quality frameworks. The unassembled 1000/Bag format minimizes storage footprint while maximizing supply efficiency for high-volume laboratories. LabSupplies.com is an authorized dealer of Caplugs® Evergreen products and ships from USA inventory, with tiered volume pricing available for institutional, hospital, and grant-funded procurement.
Frequently Asked Questions
Are these centrifuge tubes sterile?
No — they are supplied non-sterile. For applications that require sterile tubes, a separately offered sterile-grade product should be selected.
What is the maximum centrifuge speed these tubes can withstand?
These tubes are rated to 10,000 × g. Always confirm that your centrifuge rotor and run conditions do not exceed this rated RCF before use.
Do I need a tube rack to use these?
No — the freestanding flat-bottom base allows the tubes to stand upright on the bench without any external rack, simplifying staging, aliquoting, and short-term storage steps.
What does the red cap signify, and can I use these alongside other cap colors?
In standard clinical laboratory color-coding conventions, red caps are commonly associated with serum-type or STAT specimen categories. Because Caplugs® Evergreen offers centrifuge tubes in multiple cap colors, labs running color-coded tube management systems can mix cap colors across batches to distinguish specimen types or processing priorities.