Caplugs® Evergreen
15–20 mL Tube Racks, Screw Caps, PPC, Natural — 220-3519-080 | 500/Bag | Caplugs® Evergreen
15–20 mL Tube Racks, Screw Caps, PPC, Natural — 220-3519-080 | 500/Bag | Caplugs® Evergreen
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Quick Reference
| Part Number | 220-3519-080 |
|---|---|
| Capacity | 20 mL |
| Material | Polypropylene Copolymer (PPC) |
| Color | Natural |
| Geometry | Flat or molded freestanding base, cylindrical body |
| Cap | Compatible screw cap or stopper (sold separately) |
| Pack Size | 500/Bag |
| Sterility | Non-Sterile |
| Origin | Made in USA |
| Price | $188.89/Bag ($0.3778/vial) |
Technical Narrative
The Caplugs® Evergreen 220-3519-080 is a 20 mL Freestanding Vial in PPC (Natural), packaged 500/Bag. The freestanding base allows the vial to stand upright on a bench surface without a rack — eliminating rack dependency for large-volume sample handling, reagent storage, and batch processing workflows. The 20 mL format bridges the 15 mL conical tube and the 30 mL freestanding tube, suited to reagent preparation, calibrator storage, and sample pooling at the 15–20 mL scale. PPC's superior optical clarity versus homopolymer PP supports direct visual inspection of vial contents and turbidimetric monitoring.
Polypropylene Copolymer (PPC): superior clarity vs homopolymer PP, improved cold-temperature flexibility, full ACN/MeOH compatibility. BPA-free, phthalate-free, FDA-compliant,
Procurement economics: $188.89/Bag, $0.3778/vial at 500/Bag. Volume pricing at 10+ bags. LabSupplies.com ships from USA inventory, typically same business day.
Technical Specifications
| Part Number | |
|---|---|
| Caplugs Item # | |
| Capacity | 20 mL |
| Geometry | Freestanding base, cylindrical vial body |
| Material | Polypropylene Copolymer (PPC) |
| Color | Natural |
| Cap | Compatible screw cap or stopper (sold separately) |
| Sterility | Non-Sterile |
| Pack Size | 500/Bag (20 mL freestanding vial, PPC Natural, 500/Bag) |
| Application | 20 mL reagent prep, calibrator storage, sample pooling; freestanding for rack-free bench use |
| BPA / Phthalate | BPA-Free, Phthalate-Free, Latex-Free |
| Country of Origin | USA |
| Price | $188.89/Bag ($0.3778/vial) |
20 mL PPC Freestanding Vial Applications
The is compatible with the following sample handling workflows.
| Application / Platform | Configuration | Notes |
|---|---|---|
| Bench reagent prep | Bench surface, rack-free use | Freestanding base — no rack required during prep |
| Calibrator storage | Refrigerator / freezer, upright vial storage | PPC: clarity for visual level check; freestanding for rack-free storage |
| Sample pooling | Bench collection vessel, 20 mL capacity | 20 mL bridges 15 mL conical and 30 mL centrifuge tube capacity |
| Water bath incubation | Up to ~80°C | PPC: ~80°C thermal rating |
| Turbidimetric monitoring | Visual inspection through tube wall | PPC: improved clarity vs hPP for visual monitoring |
| Batch processing | High-throughput rack-free bench setup | Freestanding: upright without rack throughout workflow |
| Cold storage | —20°C / freezer | PPC: improved cold-temperature 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 20 mL PPC freestanding vials serve clinical chemistry, reference laboratory, and research workflows at the 15–20 mL scale where rack-free bench use is a workflow advantage. The freestanding base allows vials to stand upright on any bench surface without a tube rack — eliminating the rack-positioning step in high-throughput reagent preparation, calibrator dispensing, and batch sample pooling. Clinical chemistry labs use freestanding vials for calibrator and reagent storage between analytical runs; the vial stands upright in the refrigerator without a dedicated rack. PPC's improved optical clarity over homopolymer PP supports turbidimetric monitoring and visual content inspection through the vial wall.
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 vials sterile?
No. The ships Non-Sterile. For sterility-critical applications, use aseptic technique or ask about gamma-sterilized options.
What makes a 'freestanding vial' different from a standard conical tube?
Freestanding vials have a molded flat or stabilized base that allows them to stand upright on a flat bench surface without a tube rack. Standard conical tubes have a pointed or rounded conical base that requires a rack. Use freestanding vials when rack-free bench use is a workflow advantage — reagent prep, calibrator storage, and batch pipetting where positioning a rack at each step adds handling time.
What cap is compatible with the 20 mL PPC freestanding vial?
The ships without a cap. Use a compatible screw cap sized for the vial neck diameter. Verify cap thread compatibility before standardizing — contact us for cap recommendation if needed.
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