Desiccator jars are a must in all infrared laboratories. These jars are used for desiccating small samples, optics, cells and other applications. Complete with Bell jar, sealing ring and polycarbonate cover. Can be evacuated or used with a rechargeable dessicant pack. Desiccant packs can be regenerated by heating them in an oven. A polypropylene base plate is used to create a separate sample compartment in the jar for a desiccant pack which separates the desiccant (in the bottom) from the optics or other item above that is being kept dry.