TBQATNTS Lab Vacuum Desiccator, 150mm/250mm/400mm Laboratory Dessicator Double Valve Vacuum Dryer Jar, with Pressure Gauge for Vacuum Drying and Storage,400mm

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• This product is mainly used for vacuum storage, inert gas vacuum storage, vacuum drying, etc.
• High-quality polycarbonate injection molding, high-quality silicone rubber O-ring seals between the upper and lower parts of the vessel, better sealing performance.
• Two needle valves can be installed at the same time, one for vacuum extraction and the other for the introduction of inert gas to realize vacuum preservation in inert gas atmosphere.
• The needle valve and the trachea are connected by a quick change joint. The transparent container is convenient to observe the storage state of the internal items at any time.
• Suitable for vacuum drying and preservation of reagents, optical lenses, precision components, seeds, cultural relics and other items.