Caplugs® Evergreen 1.6 mL Round Bottom Test Tubes, 8 x 50 mm, Polystyrene, Natural, 1000/Bag
The Caplugs® Evergreen 1.6 mL Round Bottom Test Tubes are compact 8 x 50 mm polystyrene tubes built for small-volume sample handling, reagent aliquoting, and routine analyzer and immunoassay workflows. Their clear, natural-tinted walls support quick visual inspection, while the round bottom promotes complete sample recovery during pipetting.
Technical Specifications
| Product Type | Round Bottom Test Tubes |
| Volume/Size | 1.6 mL, 8 x 50 mm |
| Material | Polystyrene (PS) |
| Color | Natural |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| Country of Origin | USA |
Applications
- Small-volume sample aliquoting and dilution prep
- Reagent dispensing for clinical and research benches
- Sample loading on open-format analyzers and readers
- Immunoassay and ELISA reagent staging
- Short-term sample storage at room or refrigerated temperatures
- General bench-top sorting, labeling, and batch processing
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 for high-volume procurement.
Frequently Asked Questions
Are these test tubes sterile?
No. These tubes ship non-sterile and are intended for general laboratory use. For applications requiring sterility, validate an in-house sterilization method compatible with polystyrene.
Can these polystyrene tubes be autoclaved?
No. Polystyrene is not autoclavable and deforms under steam-sterilization temperatures. Use chemical or single-use protocols instead of heat sterilization.
What is the working volume of these tubes?
The tubes are rated at 1.6 mL in an 8 x 50 mm format. Leave appropriate headspace below the rim for capping, mixing, and centrifuge-free handling.
Do the tubes include caps?
No cap is listed in the specification for this item. These are supplied as open round bottom tubes, 1000 per bag.