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What is silica gel ?

Tuesday, May 29, 2012 1:35:05 PM America/Chicago

The amorphous form of silicon dioxide that is synthetically produced in a hard form of irregular granules or beads is silica gel. A very large surface area of 800 square meters per gram is given by a micro porous structure of interlocking cavities.

Silica gel is a high capacity desiccant because of this structure. The exhibition of a lower vapor pressure than the surrounding air causes water molecules to adhere to the gels surface. Once pressure reaches equilibrium, there is no more absorption. The result from higher humidity of the surrounding air is a greater amount of water absorption before equilibrium is reached. Stored or in- transit items are susceptible to damage in humidity conditions higher than 50 % relative humidity.

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What are desiccants?

Monday, May 28, 2012 1:24:00 PM America/Chicago

A desiccant/ humectant is a substance that maintains dryness in the area of a moderately well-sealed container. Common prepackaged desiccants are in solid form, using sole absorption and/or absorption of water. For certain special purposes, desiccants can be in other forms and use other methods such as chemical bonding water molecules.

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FAQ ABOUT MOISTURE AND CONDENSATION IN SHIPPING CONTAINERS

Sunday, May 27, 2012 1:30:55 PM America/Chicago

Q: How are moisture problems solved with the aid of absorpoles?

Calcium chloride aggressively, capturing and absorbing moisture from the air, are found in absorpoles. This dries the air, eliminating moisture problems.

Q: Are all moisture problems solved by absorpole?

Not all moisture problems are solved due to some cargoes being too wet causing any practical amount of absorpoles to get overpowered. However, absorpoles can protect difficult cargos that contain a lot of moisture like coffee beans, paper or wood products.

Q: Why do I continue to experience moisture problems when I load my container under dry conditions?

Pallets, crates, container floors, and other cargo or packaging contain moisture that is evaportated during transport in the air. The common cause of unexpected moisture problem is wet packaging material.

Q: I have had no problems with absorpole for years with shipping the same cargo but now I have a lot of damage. Has there been a change in the poles?

Review the container and packaging material. Have you just began to store pallets outdoors?Is your forklift able to drive in the container with snow on it's wheels? Have you recently changed your supplier of crates? This can't be told by looking at the dryness of the wood or carton. Changes in pallet moisture content makes a huge difference.

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