Caplugs® Evergreen 8.0 mL Round Bottom Test Tubes, Polypropylene (PP), 13 x 100 mm, Natural with Green Screw Caps, 1000/Bag
The Caplugs® Evergreen 8.0 mL Round Bottom Test Tubes deliver durable polypropylene construction in a standard 13 x 100 mm format for sample collection, aliquoting, and routine bench storage. Each natural-colored tube ships unassembled with a matching green screw cap, giving labs leak-resistant closure and easy color-coded sample tracking across high-throughput workflows.
Technical Specifications
| Product Type | Round Bottom Test Tubes (with Screw Caps) |
|---|---|
| Volume/Size | 8.0 mL; 13 x 100 mm |
| Material | Polypropylene (PP), Natural |
| Closure/Cap | Green Screw Cap (shipped unassembled) |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| Country of Origin | USA |
Applications
- Aliquoting and short-term storage of aqueous samples and buffers
- Sample collection and transport in clinical and research settings
- General benchtop reagent dispensing and dilution prep
- Bulk specimen handling where color-coded caps aid sorting
- Centrifugation of small-volume samples at moderate g-forces
- Cold storage of non-volatile samples in racks or freezer boxes
Quality & Procurement
labsupplies.com is an authorized Caplugs® Evergreen dealer shipping from US inventory, and these tubes are Made in USA. Each bag carries lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our procurement team for volume quotes and standing-order setup.
Frequently Asked Questions
Are these tubes shipped assembled with the caps on?
No. These tubes ship unassembled, with the 8.0 mL natural polypropylene tubes and matching green screw caps packed together for you to assemble as needed in your workflow.
Are the tubes sterile?
No. These are non-sterile tubes intended for general laboratory use. If your protocol requires sterility, autoclave or sterilize them according to your lab's validated procedure before use.
What are the tube dimensions and capacity?
Each tube measures 13 x 100 mm with an 8.0 mL nominal capacity and a round bottom, fitting standard 13 mm tube racks and most benchtop centrifuge adapters for that size.
Can polypropylene tubes be autoclaved?
Polypropylene generally withstands standard autoclave cycles at 121°C. Validate caps and tubes together under your specific cycle conditions, as repeated sterilization can affect cap seal performance over time.