30 mL Freestanding Centrifuge Tubes, Green Caps, Polypropylene Copolymer — 240-3530-G80 | 1000/Bag
These 30 mL freestanding centrifuge tubes from Caplugs® Evergreen are constructed from polypropylene copolymer (PPC) and supplied non-sterile, unassembled, 1000/Bag for high-volume laboratory procurement. Part number 240-3530-G80 features a flat-bottom freestanding base, molded-in graduations at every 5 mL, and a green cap for color-coded sample identification — all rated to withstand centrifugation up to 10,000 × g.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-3530-G80 |
| Product Type | Freestanding Centrifuge Tube |
| Volume | 30 mL |
| Maximum Centrifuge Capacity | 10,000 × g |
| Graduations | Every 5 mL (molded-in) |
| Base Style | Freestanding Flat Bottom |
| Cap Color | Green |
| Tube Body Color | Natural (clear) |
| Material | Polypropylene Copolymer (PPC) |
| Sterility | Non-Sterile |
| Format | Unassembled |
| Pack Size | 1000/Bag |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- High-speed clinical centrifugation of serum, plasma, and whole blood samples at up to 10,000 × g
- Nucleic acid (DNA/RNA) extraction requiring a chemically resistant 30 mL tube format
- Protein purification and cell culture processing where a large-volume, freestanding tube simplifies bench workflow
- Color-coded batch management using the green cap to segregate heparin-tube specimens, chemistry panels, or discrete research sample groups
- Environmental and microbiology sample concentration and pelleting
- Aliquoting and reagent preparation where molded-in 5 mL graduations provide quick volume verification without a separate pipette
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline / water | Excellent |
| Dilute acids and bases | Excellent |
| Ethanol and common alcohols | Good — short-term contact |
| Acetone and ketones | Good — short-term contact; verify for prolonged exposure |
| Chlorinated solvents (chloroform, DCM) | Limited — not recommended for extended contact |
| Aromatic solvents (toluene, xylene) | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen centrifuge tubes are manufactured from BPA-free, phthalate-free polypropylene copolymer resin and are lot-numbered to support traceability requirements in CAP-, CLIA-, and ISO 15189-accredited laboratories. LabSupplies.com is an authorized dealer of Caplugs® Evergreen consumables and ships from USA inventory, with volume and institutional pricing available for high-throughput clinical and research facilities.
Frequently Asked Questions
Are these centrifuge tubes sterile?
No — they are supplied non-sterile and unassembled, 1000/Bag, which is appropriate for the majority of clinical chemistry, molecular extraction, and research centrifugation workflows that do not require a sterility claim.
Do these tubes require a rack to stand upright?
No. The freestanding flat-bottom base allows the tubes to stand independently on any level bench surface, centrifuge staging area, or storage shelf without an external rack.
What does the green cap indicate?
The green cap provides a visual color-coding reference commonly associated with heparin-type specimen tubes, making it straightforward to segregate sample types, chemistry panels, or research batches in a multi-color tube management system.
What accuracy can I expect from the molded-in graduations?
The graduations are molded in at every 5 mL and are intended for quick volume estimation during sample preparation and aliquoting. For precise volumetric measurement, use a calibrated pipette in addition to the tube graduations.