Thermo Scientific Centrifuge Tube 15 ml with Screw Cap Conical 425 Tubes

Thermo Scientific 339651 Centrifuge Tubes – 15 mL, Conical, Racked, Sterile

The Thermo Scientific 339651 is a high-performance 15 mL conical centrifuge tube designed for the secure containment, separation, and storage of biological and chemical samples. Manufactured from high-clarity, medical-grade polypropylene, these tubes provide excellent chemical resistance and a clear view of sample pellets and interfaces. This specific model is supplied pre-loaded into racks, facilitating rapid workflow integration and organized storage. Featuring a leak-proof screw cap and a conical bottom for superior pelleting, the 339651 is certified sterile and non-pyrogenic, making it a staple for cell culture, proteomics, and general molecular biology applications.

Technical Performance and Design

• Pre-Racked Convenience: Supplied in organized racks to minimize hands-on time and reduce the risk of contamination associated with handling bulk tubes.

• Conical Bottom Geometry: Specifically engineered to optimize sample concentration and pelleting during centrifugation, ensuring maximum recovery of supernatants.

• High-Torque Screw Cap: Equipped with a flat-top screw closure that provides a secure, leak-proof seal even under high-speed centrifugation or during transport.

• Permanent Graduations: Features high-contrast, black printed graduations in 0.5 mL increments and a large white writing area for secure and legible sample labeling.

Product Specifications

• Catalog Number: 339651

• Volume Capacity: 15 mL

• Material: High-Purity Polypropylene

• Packaging Format: Racked (50 Tubes per Rack)

• Max Centrifugation Speed: Approx. 10,500 x g (depending on rotor and adapter)

• Sterility: Sterile (Gamma Irradiated)

• Purity: Certified Non-pyrogenic, Non-cytotoxic, and RNase/DNase-free.

Key Benefits & Applications

• Cell Culture Processing: Ideal for harvesting cells, washing pellets, and preparing media aliquots in aseptic environments.

• Sample Storage: The robust polypropylene construction allows for storage in mechanical freezers down to -80°C, protecting samples from thermal stress.

• Standardized Lab Workflows: Designed to fit all standard 15 mL centrifuge rotors and benchtop racks, ensuring universal compatibility across laboratory platforms.

• Contamination Control: Sterile packaging and the racked format minimize the need for manual sorting, helping to maintain a high level of cleanliness in sensitive molecular assays.

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