Reactivation Instructions for Hydrosorbent Silica Gel Dehumidifiers
Reactivation times below are minimums. Sometimes, when the silica gel becomes overly saturated, it's good practice to extend the reactivation period. However, do not vary from the recommended temperatures.
40 Gram Unit
When the blue silica gel beneath the inspection window turns pink, reactivate as follows: Place the unit in a vented 300 degree F oven for at least 3 hours (or until the silica gel turns blue again).
200, 450 and 900 Gram Units
Place the unit with the indicator card down, occasionally examining the card. When the center circle turns pink reactivate the unit as follows: Remove the bag of silica gel granules from the unit and place the bag in a vented 240 degree F oven for at least 3 hours. Replace the bag in the unit. Please note that it may take several hours for the indicating circles to turn blue again.
750 Gram Unit
When the blue silica gel beneath the heat-resistant inspection window turns pink, reactivate as follows: Do not remove the cap with the inspection window. Place the entire unit (do not disassemble) in a vented 325 degree F oven for at least 3 hours. The silica gel will gradually turn blue again. Instructions can be found on the base of the canister.
After reactivation is complete and the unit is cool enough to handle, return the unit to the enclosed space you wish to protect immediately. If you leave the unit in the open it will rapidly absorb moisture from the surrounding air.