Moisture and Condensation


Q: How do Absorpoles help to solve moisture problems?

Absorpoles contain Calciumchloride that very agressively grab and absorb moisture from the air. They dry the air. When there air is dry, there are no moisture problems.

Q: Can Absorpole solve all moisture problems?

Well, not all. Some cargoes may be so wet that any reasonable number of Absorpoles get overwhelmed. But Absorpoles can reliable protect even very difficult cargoes that may contain tons of moisture, such as coffe beans, wood products or paper.

Q: I load my container under dry conditions and it is very tightly sealed. How come I still experience moisture problems?

Your cargo or the packaging, including container floors, pallets and crates, contain moisture that is evapoorated into the air during transport. Wet packaging material is the most common cause of unexpected moisture problems.

Q: I have shipped the same cargo for years with Absorpole without any trouble, but now I have a lot of damage. Have you changed the poles?

Check your container and your packaging material. Did you just start to store your pallets outdoors? Does your forklift drive into the container with snow on the wheels? Did you just change supplier of crates? You can’t tell by looking whether wood are carton is dry. The moisture properties of wood and cartons have an exponential character. It makes a huge difference if your pallets moisture content should be 20% instead of 17%, say.

Q: I ship consumer goods in tubes/cans/jars etc that contain no moisture, yet I still have problems.

Consumer goods are often shipped with a lot of cardboard packaging. Even if the boxes seem dry they could literally hold tons of water.

Q: Each container of my cargo of peanuts/coffe/cocoa contains tons of moisture. What difference does it make that Absorpoles absorb a few litres during a voyage?

All the important thing that happen have an exponential character. That means that a small change in circumstances can have a huge effect on the outcome. Absorpoles create circumstances that allow almost all of the moisture to remain in the cargo even while the level of humidity in the air is lowered by a crucial amount, sufficient to prevent damage. It is a question of ”leverage”.

Q: Does it make a lot of difference that my cocoa beans have a moisture content of 8% instead of 7%?

Yes, such a difference could be all the difference between no damage and disaster. The moisture behaviour of most agricultural products have a strong exponential character.

Q: My cargo of peanuts had suffered damage in the centre even though the outside of the cargo looked fine and there was were no signs of condensation?

Lots, if not most, damage to cargoes is caused by prologed periods of elevated humidity without any condensation ( Container rain, Container sweat, Super Saturation Event). It is common that cargoes loaded at cool temperature and then moved into warm condition suffer damage in the centre of the cargo as a result of a difference in temperature between the outside and the centre of the cargo. Warm air from the outside of the cargo becomes humid as it moves into the cooler centre. Absorpoles protect against this effect even though the poles are mounted on the container walls.

Q: I had damage to my cargo even though I used lots of silica gell and there was no condensation. Would it help to switch to Absorpole?

Calciumchloride absorbs moisture even when the humidity is not very high. This protects the cargo against damage caused by prolonged periods of elevated humidity. Some kinds of steel start to corrode at 70% relative humidity, moulds can grow at 80% relative humidity and at near 90% relative humidity lots of things go wrong. Yet, Absorpoles are also at their most efficient protecting against condensation. Most other products, such as silica gells, are really effective only in very humid conditions and in protecting the cargo against condensation damage.