2.0 mL Amber Microcentrifuge Tubes with Tethered Flat-Top Cap — PPC, Graduated, 250/Bag
These 2.0 mL conical-bottom microcentrifuge tubes feature a permanently tethered flat-top cap and are molded from amber polypropylene copolymer (PPC) for enhanced flexibility and light-sensitive sample protection. Molded volume graduations and a flat cap writing surface support precise sample handling and direct labeling without secondary labels. Supplied non-sterile in sealed 250/Bag packaging, part number 214-3442-N80 is well suited for PCR preparation, nucleic acid extraction, enzyme reactions, and clinical microvolume workflows.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 214-3442-N80 |
| Volume | 2.0 mL |
| Bottom Style | Conical |
| Cap Style | Tethered flat-top |
| Graduations | Molded volume markings |
| Material | Polypropylene Copolymer (PPC) |
| Color | Amber |
| Sterility | Non-Sterile |
| BPA / Phthalate Free | Yes |
| Pack Size | 250/Bag |
| Country of Origin | USA |
Applications
- PCR setup and enzyme reaction preparation requiring low dead-volume conical geometry
- DNA and RNA extraction workflows where complete sample recovery from the conical tip is critical
- Cell pelleting and microvolume centrifugation in standard microcentrifuge rotors
- Clinical and CAP/CLIA laboratory sample processing with lot traceability requirements
- Storage of light-sensitive reagents, nucleotides, or fluorescent-labeled samples — the amber wall reduces photodegradation
- High-throughput pipetting runs where the tethered cap eliminates cap loss and cross-contamination risk
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol / isopropanol / ethanol | Good — suitable for standard molecular biology concentrations |
| Acetonitrile | Good |
| Aromatic solvents (toluene, xylene, etc.) | Not recommended — verify compatibility before use |
| Chlorinated solvents (chloroform, DCM) | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen tubes are manufactured from BPA-free, phthalate-free polypropylene copolymer resin with lot-to-lot dimensional consistency that ensures reliable seating in standard microcentrifuge rotor positions. PPC construction provides greater flexibility and impact resistance than standard PP homopolymer, reducing the risk of cracking during high-speed centrifuge runs. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, with tiered pricing available for institutional, hospital, and grant-funded laboratories purchasing in volume.
Frequently Asked Questions
Are these microcentrifuge tubes autoclavable?
Polypropylene copolymer (PPC) is generally autoclavable, but Caplugs® Evergreen has not published an explicit autoclave rating for this product. If sterility is required, contact LabSupplies.com to confirm before autoclaving or consider a certified sterile alternative.
Why choose amber tubes over clear for everyday microcentrifuge work?
The amber wall filters visible and UV light, protecting light-sensitive samples such as fluorescent dyes, certain nucleotides, and photolabile reagents from degradation during storage and benchtop handling — without requiring foil wrapping.
Does the tethered cap affect centrifuge balance or rotor fit?
The flat-top tethered cap is designed to the same outer profile as standard 2.0 mL microcentrifuge tubes and seats normally in standard rotor positions. The flexible hinge remains folded flat against the tube body during a run, so it does not create an imbalance or clearance issue in typical fixed-angle and swing-bucket rotors.
Can I write directly on the cap without a label printer?
Yes — the flat cap geometry provides a stable, smooth writing surface compatible with standard laboratory markers, allowing quick handwritten identification without adhesive labels that may peel during freezing or centrifugation.