Industrial & Scientific" /> Canister containing desiccant to absorb water in desiccators or other spaces up to 0.09 cubic meters (3 cubic feet) Contains 80 to 90 percent silica gel and 0.5 percent cobalt chloride Designed to be re-used  can be regenerated repeatedly without losing drying performance Color of desiccant, viewable through a window, starts as blue and changes to pink when saturated Suitable for use in closets, containers, toolboxes, and other storage areas to prevent rust and moisture damage