Nest Scientific Screw Cap Microcentrifuge Tubes

Nest Scientific attached-cap screw cap microcentrifuge tubes are engineered for reliable sample storage and low-temperature preservation of serum, culture media, cells, tissues, and other laboratory reagents. They offer excellent thermal stability across a wide temperature range from –80 °C to 121 °C, making them suitable for freezing, heating, and sterilization applications. Manufactured from high-clarity polypropylene (PP) that meets USP Class VI standards and is free of heavy metal ions, these tubes are ideal for demanding workflows in proteomics, genomics, drug discovery, and related life-science research. Available in multiple formats—including 0.5 mL self-standing, 1.5 mL self-standing, 1.5 mL conical bottom, and 2.0 mL self-standing—they accommodate a wide range of experimental requirements. The self-standing round bottom design provides excellent stability on benchtops without the need for a rack. Six color-coded cap options (blue, red, yellow, purple, green, and natural), integrated into the product code, enable quick and accurate sample identification. A precision knurled cap allows easy one-handed operation, while an integrated silicone O-ring ensures a secure, leakproof seal compliant with ADR and IATA transport standards, with no leakage at pressures down to –0.95 bar. These tubes withstand centrifugal forces up to 20,000 × g and are electron-beam sterilized (SAL 10⁻⁶) for a safe, residue-free sterilization process. Manufactured in a Class 100,000 cleanroom, they are DNase-free, RNase-free, pyrogen-free, and endotoxin-free, ensuring maximum sample integrity and experimental confidence.