The more tightly enclosed and the more vapor-proof you can make the storage area being protected, the better! Otherwise, your silica gel will "drink up" moisture from all outdoors and the surrounding air, becoming saturated and requiring reactivation so frequently as to be inconvenient. It's worth it to do your best to make the protected area as vapor-proof as possible.
Our silica gel granules are inert and nontoxic. They will not emit harmful vapors, stain, or cause any chemical reaction. Safe to use with foods, medicines, sensitive materials, electronics, films, etc.
Silica Gel in Kraft or Tyvek bags are ready to use as they are. On our larger units from the 40 gram canister on up just remove the protective pouch in which the Silica Gel unit is packaged. Than position the unit on an exposed surface anywhere within the enclosed area to be protected.
For the 200, 450 gram & 900 gram units, be sure that the end containing the indicator card is on the bottom so that the active ingredients rest on the indicator card.
Examine the indicator from time to time. Reactivation instruction for each unit follow and can also be found printed on each of the units.Reactivation Instructions
When you first use silica gel in the area to be protected, it may become saturated rather quickly as it "drinks up" residual moisture. Once the residual dampness is removed, you can maintain a dry condition with less frequent need to reactivate the silica gel.
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.
Silica Gel in Tyvek Packets: These small packets which range in size from 1/2 gram to 10 grams in size are generally thrown out after use as their replacement cost is so inexpensive compared to the time and effort to reactivate them.
If you do choose to reactivate them we suggest the following: Leave the Silica Gel crystals in the Tyvek Bag. Place the entire bag on a cooking sheet and place the sheet into a vented 240 degree F° oven for at least 3 hours. After drying out the bags place them into a sealed container with a Humidity Indicator Card that has one or more pink circles. When all circles return to the blue color, which may be several hours, you know that your Silica Gel is ready to go to work again protecting your valuables.
Aluminum Canister - 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.)
1 Lb. Foil Pack- Remove the Silica Gel granules and the Humidity Indicator Card from the foil pack. Spread the Silica Gel granules on a cooking sheet and put the sheet into a vented 240 degree F oven for at least 3 hours. When the granules have cooled down return them and the Humidity Indicator Card back to the Foil Pack. Within several hours the circles on the Humidity Indicator Card will turn blue which means that your Silica Gel is ready to be used again. If you are not going to use the Silica Gel immediately be sure to store the pack in a good air tight container.
Corrugated Carton - 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 (it may take several hours for indicating circles to turn blue again.) Replacement Humidity Indicator Cards are also available.
Steel Canister - 750 Gram Unit: When the blue silica gel beneath the inspection window turns pink, reactivate as follows: Place the entire unit (do not disassemble) in a vented 325 degree F oven for at least 3 hours. (Silica gel will gradually turn blue again.) Instructions can be found on the base of the canister.
Our Silica Gel units can be reactivated indefinitely ... provides a lifetime of protection.
Not
sure if your application calls for a Clay Desiccant, Silica Gel or Cargo
DryPak? See our Product Application Guide |
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