Caplugs® Evergreen 5.0 mL Threaded False-Bottom Sample Tubes, Polypropylene (PP), Amber, Non-Sterile, 500/Bag
The Caplugs® Evergreen 5.0 mL threaded false-bottom sample tubes deliver dependable amber polypropylene containment for light-sensitive analyte storage, aliquoting, and routine sample archiving. Their false-bottom geometry positions small-volume samples for easy pipette access, while the threaded format accepts secure screw closures for leak-resistant transport between bench, freezer, and analyzer staging.
Technical Specifications
| Product Type | Threaded False-Bottom Sample Tubes |
| Volume/Size | 5.0 mL |
| Material | Polypropylene (PP) |
| Closure/Cap | Threaded (screw-cap compatible) |
| Color | Amber |
| Sterility | Non-Sterile |
| Pack Size | 500/Bag |
| Country of Origin | USA |
Applications
- Storage of photosensitive reagents and analytes requiring amber light protection
- Sample aliquoting where the false-bottom design aids low-dead-volume recovery
- Routine specimen archiving in refrigerated or frozen conditions
- Reagent dispensing and short-term buffer holding at the bench
- Manual sample preparation prior to instrument loading
- General-purpose chemistry and life-science sample handling
Quality & Procurement
These tubes ship from US inventory through labsupplies.com, an authorized Caplugs® Evergreen dealer, and are proudly Made in USA. Each bag carries a lot number, supporting traceability requirements for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our procurement team for volume quotes.
Frequently Asked Questions
What does the false-bottom design do?
The false bottom narrows the interior at the base, concentrating small sample volumes so a pipette tip can reach and recover them with minimal dead volume — useful for limited or precious specimens.
Why are these tubes amber instead of clear?
The amber polypropylene reduces light transmission, helping protect photosensitive reagents and analytes from degradation during handling and storage.
Are these tubes sterile?
No. These are non-sterile tubes intended for general sample storage and preparation. For applications requiring sterility, validate or sterilize per your laboratory's protocol.
How are the tubes packaged and sold?
They are sold by the bag of 500 tubes (500/Bag). Each bag carries a lot number to support traceability in accredited laboratory workflows.