30 mL Freestanding Centrifuge Tubes with Spork Cap, PP, Yellow — 240-3534-Y30
These 30 mL polypropylene centrifuge tubes feature a freestanding flat-bottom base, molded-in graduations every 5 mL, and an integrated spork cap for fecal and stool specimen collection — supplied non-sterile and unassembled in a 1000/Bag format for efficient storage and high-volume workflows. Rated to 10,000 × g, the tubes handle demanding centrifugation in clinical, molecular, and research settings without requiring an external rack. The yellow cap provides instant color-coded identification for batch and tube-type management across multi-format laboratories.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-3534-Y30 |
| Volume | 30 mL |
| Maximum Centrifuge Capacity | 10,000 × g |
| Graduations | Molded-in, every 5 mL |
| Cap Color | Yellow |
| Spork Cap | Yes — integrated |
| Tube Body Color | Natural (clear) |
| Material | Polypropylene (PP) |
| Base Style | Freestanding Flat Bottom |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| Format | Unassembled |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- Fecal and stool specimen collection using the integrated spork cap — eliminating the need for a separate collection tool
- High-speed centrifugation up to 10,000 × g for clinical chemistry, molecular diagnostics, and sample preparation workflows
- Nucleic acid (DNA/RNA) extraction requiring a chemically resistant, large-volume polypropylene vessel
- Cell culture, protein purification, and other bioprocessing workflows where a 30 mL format is preferred
- Freestanding bench-top specimen staging, aliquoting, and storage without an external rack
- Color-coded tube management in CAP-, CLIA-, and ISO 15189-governed laboratories, supported by lot-numbered traceability
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers and saline | Excellent |
| Dilute acids and bases | Excellent |
| Alcohols (ethanol, isopropanol) | Good — short-term contact |
| Ketones (acetone) | Limited — not recommended for prolonged exposure |
| Chlorinated solvents (chloroform, DCM) | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
| Autoclave sterilization | Compatible (PP is autoclavable; tubes supplied non-sterile) |
Quality & Procurement
Made in USA, these Caplugs® Evergreen centrifuge tubes are manufactured from BPA-free, phthalate-free polypropylene and are lot-numbered to support the traceability requirements of CAP-, CLIA-, and ISO 15189-accredited laboratories. LabSupplies.com is an authorized dealer stocking these tubes from USA inventory, with same-business-day shipping on stocking items and tiered volume pricing available for institutional, hospital, and grant-funded procurement teams.
Frequently Asked Questions
Are these centrifuge tubes sterile?
No — part number 240-3534-Y30 is supplied non-sterile. They are intended for specimen collection and general laboratory workflows that do not require a sterility guarantee. If your protocol requires sterile tubes, please contact us for alternative options.
What is the spork cap, and why does it matter?
The integrated spork cap combines a spoon and fork-like collection tool directly on the tube cap, making these tubes a self-contained solution for fecal and stool specimen collection. This eliminates the need to purchase and inventory a separate collection accessory and reduces handling steps at the point of collection.
Do the tubes require a rack to stand upright?
No — the freestanding flat-bottom base allows the tubes to stand stably on any bench surface without a rack, which simplifies centrifuge staging, aliquoting, and short-term storage during high-throughput workflows.
How precise are the volume graduations?
The tubes have molded-in graduation marks at every 5 mL increment across the full 30 mL volume, providing a reliable visual reference for sample preparation and aliquoting without the need for a separate measuring vessel in routine workflows.