15–30 mL Centrifuge Tubes, Screw Caps, PP, Natural — 220-3530-030 | 250/Bag | Caplugs® Evergreen

Quick Reference

Technical Narrative

The Caplugs® Evergreen 220-3530-030 is a 30 mL Freestanding Centrifuge Tube in PP (Natural), packaged 250/Bag. The 30 mL freestanding tube is the standard large-volume centrifuge tube for cell culture harvest at the 15–30 mL scale, bulk reagent preparation, density gradient centrifugation, and SPE fraction collection above the 15 mL conical capacity. The freestanding base eliminates rack dependency during bench processing of large batches.

Polypropylene (PP): PP provides full acetonitrile and methanol compatibility, pH 2–12 resistance, and ~80°C thermal rating — suited to organic-solvent centrifugation protocols, SPE eluate collection at the 30 mL scale, and elevated-temperature incubation. BPA-free, phthalate-free, FDA-compliant,

Procurement economics: $163.59/Bag, $0.6544/tube at 250/Bag. Volume pricing at 10+ bags. LabSupplies.com ships from USA inventory, typically same business day.

Technical Specifications

30 mL PP Freestanding Centrifuge Tube Applications

The is compatible with the following large-volume centrifuge and lab prep workflows.

Chemical Resistance — Polypropylene (PP)

Compatibility reference for PP at typical laboratory concentrations.

Clinical & Research Laboratory Applications

Caplugs® Evergreen 30 mL PP freestanding centrifuge tubes serve cell biology, microbiology, bioanalytical, and research laboratories running large-volume centrifuge workflows above the 15 mL conical tube capacity. The 30 mL format is standard for suspension culture harvest at the 20–30 mL scale, bulk reagent and buffer preparation, density gradient centrifugation (Ficoll, Percoll), and SPE eluate collection at the 15–30 mL scale. The freestanding base eliminates rack dependency throughout the sample prep workflow — the tube stands upright during bench pipetting, incubation, and sorting without requiring a rack at each step.

U.S. Manufacturing, Quality & Institutional Procurement

Caplugs® Evergreen products are manufactured in the United States under ISO 9001 quality management from FDA-compliant, food-contact-grade resins. BPA-free, phthalate-free, and latex-free, with material-disclosure documentation supporting CAP, CLIA, and ISO 15189 laboratory accreditation audits.

LabSupplies.com is an authorized dealer for the full Caplugs Evergreen catalog and ships directly from USA inventory — typically same business day for stocking SKUs. We offer below retail pricing on volume orders, tiered institutional and academic pricing, and direct support for grant-funded laboratories and government procurement channels. Lab managers and procurement officers can request a written quote or speak with a product specialist directly from our sales engineering team.

Frequently Asked Questions

Are the tubes sterile?

No. The ships Non-Sterile. For sterility-critical applications, use aseptic technique or ask about gamma-sterilized options.

What is the maximum centrifuge speed for the 30 mL freestanding tube?

Freestanding centrifuge tubes in the 30 mL format are suitable for bench centrifuges with appropriate rotor adapters up to approximately 3000×g for standard cell pelleting and density gradient protocols. For speeds above 3000×g, verify that the specific rotor and adapter are rated for the tube format. Do not use freestanding tubes in rotors designed only for standard-base conical tubes without confirming adapter compatibility.

What cap is compatible with the 30 mL PP freestanding centrifuge tube?

The ships without a cap. Use a compatible screw cap matching the tube neck diameter. For centrifugation, ensure the cap is rated for the rotor speed and that the tube-cap assembly clears the rotor lid. Contact us for cap compatibility guidance if needed.