Caplugs® Evergreen
5–8 mL Test Tubes, Screw Caps, PS, Natural — 222-2070-010 | 25/Bag | Caplugs® Evergreen
5–8 mL Test Tubes, Screw Caps, PS, Natural — 222-2070-010 | 25/Bag | Caplugs® Evergreen
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Quick Reference
| Part Number | 222-2070-010 |
|---|---|
| Capacity | 16 mL |
| Dimensions | 17 × 100 mm |
| Material | Polystyrene (PS) |
| Color | Natural |
| Cap / Closure | None — open-top; use separate cap or stopper |
| Sterility | Sterile — individually or bag sterile-packed |
| Pack Size | 25/Bag |
| Key Use | Larger-volume culture, sample prep, serological tubes |
| Origin | Made in USA |
| Price | $105.83/Bag ($4.2330/tube) |
Technical Narrative
The Caplugs® Evergreen 222-2070-010 is a 16 mL Round Bottom PS Sterile Test Tube, 17 × 100 mm, open top, 25/Bag, sterile. The 16.0 mL 17×100 mm format is a larger round-bottom tube suited to culture, sample pooling, and preparation workflows where the 5–8 mL formats are insufficient but a 15 mL conical tube is not required. The open-top format allows unrestricted pipette access from above and is compatible with a wide range of separately sourced stoppers and caps.
PS provides optical clarity for direct visual reading of agglutination, turbidity, and cell pellet patterns through the tube wall. PS's low autofluorescence is also important for fluorescence-based assays performed in tube format. BPA-free, phthalate-free, FDA-compliant,
Procurement economics: $105.83/Bag, $4.2330/tube. Siblings: 222-2088-050 (19 mL 16×125 mm Screw Cap Unassembled 25/Bag); 222-2012-010 (5.0 mL 12×75 mm Open Top 25/Bag). LabSupplies.com ships from USA inventory, typically same business day.
Technical Specifications
| Part Number | |
|---|---|
| Caplugs Item # | |
| Capacity | 16 mL |
| Dimensions | 17 × 100 mm |
| Geometry | Round bottom |
| Material | Polystyrene (PS) |
| Color | Natural |
| Cap | None (open top); use compatible stopper or separate cap |
| Sterility | Sterile — individually or bag sterile-packed |
| Pack Size | 25/Bag |
| Application | Larger-volume culture, sample prep, high-volume serology |
| BPA / Phthalate | BPA-Free, Phthalate-Free, Latex-Free |
| Country of Origin | USA |
| Price | $105.83/Bag ($4.2330/tube) |
16.0 mL 17×100 mm Sterile PS Round Bottom Tube Applications
The is compatible with the following laboratory workflows.
| Application / Instrument | Configuration | Notes |
|---|---|---|
| Large-volume culture | Roller tube incubation, 16 mL round bottom | 16 mL capacity for larger cell culture volume |
| Sample pooling / dilution | Manual dilution setup, 16 mL scale | Large round-bottom for mixing and dilution |
| High-volume serology | Tube agglutination, larger volume panels | 16 mL for protocols needing more reagent volume |
| Centrifugation | Clinical centrifuge, 17×100 mm position | Verify rotor adapter compatibility for 17×100 mm tube |
| Urinalysis sediment | Centrifuge for large-volume sediment prep | Round bottom: uniform pellet |
| Buffer / reagent prep | Bench preparation, 15–16 mL scale | PS clarity for visual solution monitoring |
| Sample collection / storage | Open top with compatible stopper | Sterile; separate stopper for storage |
Chemical Resistance — Polystyrene (PS)
Compatibility reference for PS at typical laboratory conditions.
| Reagent / Condition | Compatibility | Notes |
|---|---|---|
| Aqueous buffers / saline | Excellent | PS compatible across pH 4–10. |
| Serum / plasma / whole blood | Excellent | Standard clinical and blood bank matrix. |
| Formalin (10% NBF) | Excellent | Compatible for fixation steps in tube format. |
| Methanol (<100%) | Limited | Short-term compatible for fixation; prolonged contact causes crazing. |
| Cell culture media (RPMI, DMEM) | Excellent | PS: standard cell culture material. |
| DMSO (<1%) | Good | Compatible at standard cryoprotectant concentrations. |
| Acetone / chloroform | Not Compatible | Dissolves PS; do not use. |
| Flow cytometry reagents (FITC, PE) | Excellent | PS: low autofluorescence for fluorescence-based reading. |
Clinical & Research Laboratory Applications
Caplugs® Evergreen 16.0 mL 17×100 mm sterile PS round-bottom test tubes serve cell biology, microbiology, and serology laboratories requiring larger-volume round-bottom tube capacity above the 8.0 mL 13×100 mm format. The 16.0 mL round-bottom tube is used in roller tube cell culture and virus propagation protocols where the 16 mL round-bottom tube is the standard roller tube format for viral antigen production and primary cell culture in rotating incubators. Reference serology laboratories use 16.0 mL tubes for large-volume complement fixation tests and other high-volume serological procedures requiring more reagent volume than the standard 8.0 mL format provides.
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 test tubes sterile?
Yes. Sterile — bag or individually sterile-packed as specified. Maintain sterility until the wrapper is opened.
What cap or stopper is compatible with the 16.0 mL open-top tube?
Use a compatible stopper sized for the 17 mm OD tube opening. Standard rubber stoppers, PS snap caps, or screw caps matching the tube neck diameter are suitable. Contact us for cap compatibility guidance.
What is the difference between sterile 222-series and non-sterile 214-series round-bottom PS tubes?
The 222-series tubes are sterile-packed, required for direct patient specimen contact, cell culture, and sterile downstream processing. The 214-series tubes are non-sterile, suited to general serology, diagnostic testing, and bench protocols where sterility is not required. Tube material and geometry are equivalent.
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