Vacuum jar / desiccator. Support a vacuum of -740mm/Hq with a loss not exceeding 20mm/Hq in 24 hours. The transparente top cover made of polycarbonate is coupled to the lower section of polypropylene and tightness is ensured by the inserted neoprene rubber gasket in the slot. The lid has an internal basket that serves as a container for a drying agent (calcium chloride, silica gel, etc.).