Caplugs® Evergreen
15–30 mL Centrifuge Tubes, Screw Caps, PPC, Natural — 220-3530-080 | 250/Bag | Caplugs® Evergreen
15–30 mL Centrifuge Tubes, Screw Caps, PPC, Natural — 220-3530-080 | 250/Bag | Caplugs® Evergreen
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Quick Reference
| Part Number | 220-3530-080 |
|---|---|
| Capacity | 30 mL |
| Material | Polypropylene Copolymer (PPC) |
| Color | Natural |
| Geometry | Flat freestanding base, 30 mL conical or cylindrical body |
| Cap | Compatible screw cap (sold separately) |
| Pack Size | 250/Bag |
| Sterility | Non-Sterile |
| Origin | Made in USA |
| Price | $163.59/Bag ($0.6544/tube) |
Technical Narrative
The Caplugs® Evergreen 220-3530-080 is a 30 mL Freestanding Centrifuge Tube in PPC (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 Copolymer (PPC): PPC adds improved optical clarity over homopolymer PP for direct visual inspection through the tube wall and better cold-temperature flexibility — suited to visual monitoring, cold-room centrifugation, and workflows requiring the clarity advantage alongside broad organic solvent compatibility. 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
| Part Number | |
|---|---|
| Caplugs Item # | |
| Capacity | 30 mL |
| Geometry | Freestanding base, 30 mL centrifuge tube |
| Material | Polypropylene Copolymer (PPC) |
| Color | Natural |
| Cap | Compatible screw cap (sold separately) |
| Sterility | Non-Sterile |
| Pack Size | 250/Bag (30 mL freestanding centrifuge tube, PPC Natural, 250/Bag) |
| Application | 30 mL cell harvest, reagent prep, SPE; PPC optical clarity for visual monitoring |
| BPA / Phthalate | BPA-Free, Phthalate-Free, Latex-Free |
| Country of Origin | USA |
| Price | $163.59/Bag ($0.6544/tube) |
30 mL PPC Freestanding Centrifuge Tube Applications
The is compatible with the following large-volume centrifuge and lab prep workflows.
| Application / Platform | Configuration | Notes |
|---|---|---|
| Bench centrifuge | Centrifuge rotor with 30 mL conical adapter, up to 3000×g | Freestanding base; verify rotor accepts this format |
| Cell culture harvest | Suspension culture, 30 mL aliquots | Large-format harvest; freestanding for rack-free bench handling |
| Bulk reagent prep | Bench preparation at 30 mL scale | Freestanding — no rack needed during prep |
| SPE eluate collection | Under SPE manifold, 30 mL collection | PPC: PPC clarity + full ACN/MeOH; 80°C rating |
| Water bath incubation | Up to ~80°C | PPC: ~80°C thermal rating |
| Density gradient centrifugation | Swing-bucket or fixed-angle rotor | 30 mL capacity for Ficoll/Percoll gradients |
| Cold storage | 4°C / —20°C, freestanding | PPC: improved cold flexibility |
Chemical Resistance — Polypropylene Copolymer (PPC)
Compatibility reference for PPC at typical laboratory concentrations.
| Reagent / Sample Type | Compatibility | Notes |
|---|---|---|
| Aqueous buffers / saline | Excellent | Inert across pH 2–12. |
| Dilute acids / bases (<10%) | Excellent | Broad pH resistance. |
| Methanol / acetonitrile (<100%) | Excellent | Full organic solvent compatibility. |
| Ethanol / IPA (<100%) | Excellent | Compatible for extraction and fixation. |
| Ethyl acetate | Limited | Short-term compatible; avoid prolonged contact. |
| Dichloromethane / chloroform | Not Compatible | Causes cracking; do not use. |
| Cell culture media | Excellent | Standard biological matrix; low protein-binding. |
| Cold storage (—80°C) | Excellent | PPC: improved flexibility vs hPP at low temperatures. |
Clinical & Research Laboratory Applications
Caplugs® Evergreen 30 mL PPC 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.
Why choose PPC over PP (220-3530-030) for the 30 mL freestanding tube?
Both provide full ACN/MeOH organic solvent compatibility and ~80°C thermal rating. PPC adds improved optical clarity for visual sample and gradient interface monitoring through the tube wall, and better cold-temperature flexibility for 4°C centrifuge protocols. Use PP when price is the primary criterion and optical clarity is not required; use PPC when visual monitoring or cold-room centrifugation are workflow requirements.
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