The Drierite Mini-Dehumidifier (formerly called balance desiccator) is designed for the static absorption of moisture in closed containers of up to 6 cubic feet in volume. It meets the demand for a convenient, safe and efficient drying unit for the analytical balance or other small closed compartments, such as reagent storage cabinets, desiccators and safes. This unit will dry static air and gases to a -100° F dew point. When the included relative humidity card changes color, it signals the need for regeneration. The Drierite Mini-Dehumidifier may be regenerated by placing it in an oven at 220° C or 425° F for one hour.