Equipped with a -engineered metal valve core, this desiccator allows for meticulous air control, enabling gradual adjustments from low to high to maintain optimal conditions for sensitive materials. After vacuum sealing, the desiccator maintains a stable vacuum level with less than 6% change over 30 days, providing an ideal environment for the extended storage of biochemical reagents, medicines, and other sensitive items. This vacuum desiccator is crafted from high-quality polycarbonate, featuring a robust injection molding process that ensures durability and resistance to chemical , making it ideal for rigorous laboratory environments. Designed for superior sealing performance, this desiccator includes a high-quality silicone rubber O-ring, ensuring an airtight seal between the upper and lower sections, which significantly enhances the preservation and protection of stored items. This versatile vacuum desiccator is not only perfect for drying but also for the safe storage of optical lenses, components, seeds, cultural relics, and other valuable or delicate items, protecting them from moisture and environmental contaminants.