2.0 mL Conical Microcentrifuge Tubes with Tethered Flat-Top Cap — PPC, Natural, 1000/Bag (214-3442-080)
These 2.0 mL polypropylene copolymer (PPC) microcentrifuge tubes feature a permanently tethered flat-top cap and a conical bottom for complete pellet recovery in microvolume workflows. Supplied non-sterile in sealed 1000/Bag packaging, they are well suited to high-throughput molecular biology, clinical sample processing, and routine centrifugation tasks. Molded volume graduations and a flat cap writing surface support sample traceability without additional labeling consumables.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 214-3442-080 |
| Volume | 2.0 mL |
| Bottom Style | Conical |
| Cap Style | Tethered flat-top |
| Graduations | Molded volume markings |
| Material | Polypropylene Copolymer (PPC) |
| Color | Natural |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- PCR and enzyme reaction setup requiring precise microvolume handling
- DNA and RNA extraction with complete pellet recovery at the conical tip
- Cell pelleting and microvolume centrifugation in research and clinical labs
- Clinical microvolume sample processing where lot traceability is required (CAP/CLIA/ISO 15189 environments)
- High-density tube storage using stable flat-cap stacking geometry
- Repetitive single-handed pipetting workflows where cap loss must be eliminated
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol | Compatible |
| Isopropanol | Compatible |
| Acetonitrile | Compatible |
| Aromatic solvents (benzene, toluene, xylene) | Not recommended — limited resistance |
| Chlorinated solvents (chloroform, DCM) | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen microcentrifuge tubes are manufactured from BPA-free, phthalate-free polypropylene copolymer resin under ISO 9001 quality management, with lot-to-lot dimensional consistency for reliable fit in standard microcentrifuge rotor positions. The sealed 1000/Bag format maintains product integrity from warehouse receipt through point of use. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered pricing available for high-volume institutional and grant-funded purchasers.
Frequently Asked Questions
Are these microcentrifuge tubes sterile?
No — part number 214-3442-080 is supplied non-sterile. For applications requiring sterility, additional decontamination steps such as UV irradiation or autoclaving should be performed according to your laboratory's validated protocols. PPC is autoclavable, so steam sterilization is an option if needed.
What is the advantage of polypropylene copolymer (PPC) over standard polypropylene homopolymer?
PPC offers enhanced flexibility and impact resistance compared with standard PP homopolymer, which reduces the risk of cracking or tube failure during high-speed microcentrifuge runs — a meaningful benefit for samples that cannot be recovered if a tube breaks.
Why does a tethered cap matter in high-throughput workflows?
Because the cap is permanently attached via a flexible hinge, it cannot be misplaced or mixed up with caps from other tubes. This eliminates cross-contamination risk during rapid open-and-close pipetting cycles and allows single-handed operation that keeps the workflow moving.
Can I write directly on these tubes for sample identification?
Yes — the flat-top cap geometry provides a stable, smooth writing surface compatible with standard laboratory markers. The molded volume graduations on the tube wall are permanent and solvent-resistant, supporting complete sample traceability without adhesive labels.