Nest Scientific screw cap microcentrifuge tubes are designed for the preservation and low-temperature refrigeration of serum, culture media, cells, tissues, and other reagents, with excellent temperature tolerance ranging from -80℃ to 121℃. Manufactured from transparent polypropylene (PP) that meets USP Class VI standards and is free of heavy metal ions, these vials are ideal for applications in proteomics, drug development, genomics, and related research fields. Available in multiple specifications, 0.5 mL self-standing, 1.5 mL self-standing, 1.5 mL conical bottom, and 2.0 mL self-standing they meet diverse experimental needs. The round, self-standing bottom design allows the vials to remain stable on lab surfaces without a base, while six cap colors (blue, red, yellow, purple, green, and natural) provide convenient reagent identification, with each color encoded in the product code. A special knurling design enables easy one-handed handling, and the silicone O-ring within the screw cap ensures secure, leakproof sealing compliant with ADR and IATA standards, with no leakage under -0.95 bar pressure. The vials withstand centrifugal forces up to 20,000 × g and undergo electron beam sterilization (SAL = 10⁻⁶) for a safe, residue-free process. Manufactured in a 100,000-class cleanroom, they are DNase-free, RNase-free, pyrogen-free, and endotoxin-free to ensure maximum sample integrity.
