50mL External Cryogenic tubes, Bulk, Clear, Flat bottom, External Standard Cap , without O-ring, Without Writing Area, Non-Graduated, Sterile.

Large-capacity cryogenic tubes are standard consumables for biological sample storage and lab management. Designed for cryopreservation of large specimens such as frozen embedded tissue blocks, bone, placental lobules, glands and hair, they suit various lowtemperature storage applications. Featuring excellent low-temperature resistance, the tubes remain crack- and leak-proof during long-term cryostorage. The rigorously tested seal provides reliable protection against external contamination, evaporation and cross-contamination. The coding is integrally formed, uniform and durable, supporting standardized sample tracking and management.

Feature Made from FDA approved food grade raw material particles Sterile, Non-DNase/RNase, Pyrogen-free Temperature range: -80℃ Base design a anti-rotation locking structure, stable on 24-well SBS racks, compatible with automatic capper/decapper and liquid handling workstations. Features integrated laser engraving technology. The tube bottom is pre-formed with a unique non-repeating numeric code and corresponding QR code at 600 dpi high resolution, delivering clear, legible and durable marking. Optional: Sidewall barcode + numeric code.