Steel Canister protects 57 cubic feet of enclosed space. Unit reactivates in any conventional oven. This heavy duty unit is preferred by collectors, coin and stamp dealers and museums. Provides lifetime protection.

The silica gel visible through the inspection window will turn from blue, pinkish/orange to clear. Mini Canister: When it becomes clear, place the unit in 300 degree over for at least 3 hours.
Large Canister: When it becomes clear, place the entire unit in 325 degree over for at least 3 hours.
Small, Medium & XL Pack: When it becomes pink, remove silica bag from unit and place the bag in a 240 degree over for at least 3 hours.