Thermo Scientific 3490S Centrifuge Tube 2 mL Screw Cap 2 Packs of 500 Tubes

Thermo Scientific 3490S Centrifuge Tube – 2.0 mL, Skirted, Screw Cap, Sterile

The Thermo Scientific 3490S is a premium 2.0 mL free-standing microcentrifuge tube designed for secure sample storage, transport, and high-speed processing. Manufactured from high-clarity, medical-grade polypropylene, these tubes feature a skirted base that allows them to stand independently on laboratory surfaces. This model is supplied sterile and is certified free from RNase, DNase, and pyrogens, making it an ideal choice for molecular biology, clinical diagnostics, and forensic research. The screw-cap design provides a superior airtight seal, preventing sample evaporation and contamination even during extreme thermal cycling or long-term cryogenic storage.

Technical Performance and Design

• Free-Standing Skirted Base: The stable, flat-bottom exterior allows the tube to remain upright without a rack, facilitating efficient one-handed pipetting and reducing the risk of benchtop spills.

• Secure Screw Closure: The threaded cap provides a reliable, leak-proof barrier, essential for protecting volatile samples and preventing leakage during intensive vortexing or high-speed centrifugation.

• Validated Sterility: Gamma-irradiated to ensure the highest level of purity, these tubes are ready for use in aseptic environments and sensitive genomic applications.

• Temperature and Chemical Resilience: Engineered to withstand extreme environments, from ultra-low temperature freezers (-80°C) to vapor-phase liquid nitrogen, as well as autoclaving procedures (+121°C).

Product Specifications

• Catalog Number: 3490S

• Volume Capacity: 2.0 mL

• Material: High-Purity Polypropylene (PP)

• Base Style: Skirted (Free-Standing)

• Sterility: Sterile

• Purity: Certified DNase, RNase, and Pyrogen Free

• Packaging: Typically supplied in bulk bags (500/pk or 5000/cs)

Key Benefits & Applications

• Clinical Specimen Collection: The self-standing design and secure screw cap make these tubes excellent for collecting, transporting, and storing patient samples such as urine, sputum, or blood derivatives.

• Genomics and PCR: The sterile, high-purity resin ensures that DNA and RNA samples remain free from degradative enzymes and inhibitors throughout the extraction and amplification process.

• Biobanking: Optimized for long-term preservation of cell lysates, enzymes, and reagents in deep-freeze conditions, ensuring sample longevity and stability.

• Automated Workflows: Compatible with most standard 2.0 mL racks and automated liquid handling systems, providing a versatile solution for high-throughput laboratory settings.

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