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. 40 gram and larger canister and box products just remove the protective pouch in which the Silica Gel unit is packaged. Then 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 Instructions - Tyvek Packets
Low heat and a long processing time is required to properly dry out silica in Tyvek.
Do not try to cheat the process by starting with a hot oven or using excessive heat, doing so will destroy the storage medium and/or Silica material.
Products that include reactivation instruction users should follow the exact manufacture recommended instructions.
Important: Check your ovens temperature for proper heating levels.
Ovens must be a vented model to allow moisture released from the Silica to escape during the heating process. The best oven choice is convection or forced air system as it provides the best air flow to aid in drying the packets.
Tyvek has a melting point of 250 degrees Fahrenheit and will melt if you reach or exceed this temperature!
Place packets on a wire rack shelf to improve air-flow, do not pile up packets. When processing more than one rack of packets leave 1”-2” of space between racks, rack should be at lest 1-1/2 feet from the heat source.
The beads have trapped moisture so you need to start the reactivation process with a cold oven, this help prevent seal failure when the water vapor starts to cause the packets to expand as water molecules are released.
Silica can be reactivated at temperatures between 220 - 240 degrees, the ovens Temperature should not increase faster than 0.25 to 0.50 deg F per minute.
The Desiccant will require 12-24 hours of drying time depending on the volume of product being reactivated.
Packets reactivated should be promptly stored in a heat resistant air tight container to prevent moisture from being re-absorbed during the cooling period.
Once packets have cooled you can replace them in your area of humidity control or store these in an air tight container until ready to use.
Sellers Disclaimers:
Since we can not supervise the reactivation process these instructions are provided with a use at your own risk condition.
Packet failure during a reactivation cycle is a possibility, we do not manufacture these packets and can not account for the bonding method used to keep these closed, sorry no exchange or returns in case of this occurrence.
Silica packets are sold as a one time use disposable medium for humidity control the seller of these silica based products waives all responsibility for use and reactivation of this product to the purchaser.
Reactivation Instruction 40 Gram units and larger.
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.)
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.
We do not recommend reactivation for Clay products or Silica in Kraft media.
Not
sure if your application calls for a Clay Desiccant, Silica Gel or Cargo
DryPak?
See our Product Application Guide |
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