0.5 mL Conical Microcentrifuge Tubes with Tethered Cap — Polypropylene, Natural, 1000/Bag
These 0.5 mL conical microcentrifuge tubes feature a permanently attached tethered cap that eliminates cap loss and reduces cross-contamination risk during high-throughput pipetting workflows. Manufactured from virgin-grade polypropylene (PP) in a natural (translucent) finish, they are supplied non-sterile in sealed 1000/Bag packaging and fit standard microcentrifuge rotor positions. The conical bottom geometry concentrates pellets at the tube tip for complete microvolume recovery with minimal dead volume after centrifugation.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 214-3403-030 |
| Volume | 0.5 mL |
| Bottom Style | Conical |
| Cap Style | Tethered — permanently attached |
| Material | Polypropylene (PP) |
| Color | Natural (translucent) |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- PCR preparation and enzyme reaction setup requiring low dead volume at the conical tip
- DNA and RNA extraction workflows where complete pellet recovery is critical
- Protein precipitation and cell pelleting in benchtop microcentrifuge rotors
- Clinical microvolume sample processing
- High-throughput repetitive pipetting operations where tethered caps enable single-handed opening and closing to minimize workflow interruption
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol / isopropanol / ethanol | Good — short-term contact |
| Acetonitrile | Good — short-term contact |
| Aromatic / chlorinated solvents | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen microcentrifuge tubes are produced at ISO-certified facilities from FDA-registered, BPA-free, phthalate-free virgin-grade polypropylene. Lot-to-lot dimensional consistency ensures reliable rotor fit and cap hinge durability across every bag, and each sealed bag ships. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory.
Frequently Asked Questions
Are these microcentrifuge tubes sterile?
No — the 214-3403-030 tubes are supplied non-sterile in sealed 1000/Bag packaging. For applications requiring sterility, consider a DNase/RNase-free certified option or autoclave these tubes prior to use, since polypropylene is autoclavable.
What makes a tethered cap better than a snap cap for high-throughput work?
The tethered cap is permanently attached via a flexible hinge, so it cannot be misplaced or mixed between tubes during rapid sample processing. Single-handed open-and-close operation also reduces repetitive motion and workflow interruption compared to separate snap caps.
Will these tubes fit my standard benchtop microcentrifuge rotor?
Yes — the 0.5 mL conical format is dimensionally consistent with standard microcentrifuge rotor positions designed for this tube size. Caplugs® Evergreen manufactures to tight dimensional tolerances to ensure consistent rotor fit across all 1000 tubes in a bag.
