This reusable canister is ideal for desiccator cabinets. The silica gel inside effectively absorbs moisture through perforations in the aluminum case. One canister will maintain a safe level of humidity in .09 cubic meter (3 cubic ft) of space. It is also excellent for use in closets, containers, tool boxes, camera cases and other storage areas to prevent rust and moisture invasion. It can be regenerated in a 150° C (300° F) oven in about 3 hours for unlimited life. A monitor window shows blue when recharged and pink when saturated.