About moisture and condensation in shipping containers

Q: How do InterDry absorbers help to solve moisture problems?

InterDry absorbers contain Calcium chloride that very aggressively grab and absorb moisture from the air. They dry the air. When there air is dry, there are no moisture problems.

Q: Can InterDry absorbers solve all moisture problems?

Well, not all. Some cargoes may be so wet that any reasonable number of InterDry absorbers get overwhelmed. But InterDry absorbers can reliable protect even very difficult cargoes that may contain tons of moisture, such as coffee 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 evaporated 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 InterDry absorbers 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/coffee/cocoa contains tons of moisture. What difference does it make that InterDry absorbers absorb a few litres during a voyage?

All the important things that happen have an exponential character. That means that a small change in circumstances can have a huge effect on the outcome. InterDry absorbers 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 prolonged 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. InterDry absorbers protect against this effect even though the absorbers are mounted on the container walls.

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

Calcium chloride 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, InterDry absorbers are also at their most efficient protecting against condensation. Most other products, such as silica gels, are really effective only in very humid conditions and in protecting the cargo against condensation damage.

Q: What is so great about InterDry absorbers anyway?

Well, they will not fall off the wall, get punctured during loading and unloading, leave a wet puddle on the cargo or run out after half the voyage. They are installed in seconds without ladders and take up no cargo space. The capacity of each absorber is big, so fewer is required. The cost of an installation is very competitive, even against much inferior alternatives.

Q: How many absorbers do I need?

The number of InterDry absorbers required to protect the cargo depends on the cargo, the temperature conditions during the voyage, the length of the voyage – and just how safe you want to be. For some really dry cargoes e.g.. steel coils or household removals, 2-3 InterDry absorbers are enough. For a lot of ”normal” goods 4-6 InterDry absorbers is about right. Some cargoes with very difficult moisture properties on long voyages may require up to 16 InterDry absorbers.

Q: Do I need to line my container with kraft paper?

Lots of containers are lined with Kraft paper primarily for reasons of hygiene or to simply isolate the cargo from direct contact with the container walls. The liner will act as a kind of sponge, catching and absorbing any droplets of water and then re-evaporating the moisture into the air. If liner is used without InterDry absorbers it could contribute top a kind of pumping effect, drawing moisture out of the cargo. When used together with InterDry absorbers the liner will act as a buffer in extreme conditions, and will prevent any container rain from reaching the cargo. Much the same can be said for so called dew cloths.

Q: My container is absolutely filled with cargo. Will the InterDry absorbers still work?

Moisture diffuses very effectively, even through a seemingly compact cargo. Experience shows that InterDry absorbers will make a difference even to mould growth inside cartons in the cargo. It is, however, necessary that some free space is left in front of each InterDry absorbers. If some InterDry absorbers have collected less water than others inside a container, there may be a problem with air access to those absorbers.

Q: I have problems with mould growth inside my shrink-wrapped pallets. Will InterDry absorbers help?

Yes, so long that there is some access of air through the top and bottom of the pallets. If this is not possible, a spiked roller may be used to tear holes in the shrink wrap.

Q: My shipments of steel/galvanised components/aluminium/ machinery etc arrives corroded, stained or discoloured despite heavy packaging. Will InterDry absorbers help?

You can forget about your tectyl, coatings, oil-paper and plastic wraps that are expensive both to apply and remove. Your container can probably be equipped with a sufficient number of InterDry absorbers to protect against any damage at less cost than your present packaging.

Q: I got some brine on my hands while removing used InterDry absorbers . Is it dangerous?

No it isn’t. Calcium chloride is non-toxic and environmentally safe. It is the second biggest constituent of sea-salt and is liberally sprinkled over icy roads in cold countries. The brine is somewhat similar to very salty seawater, and may cause irritation and rashes if left to dry on the skin. We recommend that you wear gloves and goggles when handling used absorbers, but should you get splashed by brine just wash off immediately with lots of fresh water.

Q: Can I re-cycle my used absorbers?

The absorbers can not be re-used but can be disposed of environmentally friendly. It doesn’t contain any harmful chemicals.

India Likely to Retain Top Rice Exporter Status in 2013, Says FAO

India Likely to Retain Top Rice Exporter Status in 2013, Says FAO

India is expected to become the world’s largest rice exporter for the second consecutive year in 2013, according to the UN’s Food and Agriculture Organization (FAO) which revised upward India’s 2013 rice export forecast to around 8.3 million tons, up about 10% from January estimates of around 7.5 million tons.

The FAO said that the 2013 rice export forecast for India was increased in line with upward revisions by the Indian government for 2012 rice production to around 101.8 million tons, referring to the second advance estimates released by the Indian government in February. However, according to the third advance estimate released by India last week, rice production in 2012 is estimated even higher at around 104 million tons of milled rice.

The FAO says that Vietnam with around 7.8 million tons of rice exports and Thailand with around 7.7 million tons of rice exports are likely to remain the second and third largest rice exporters in 2013. India was the largest rice exporter in 2012, exporting about 10.3 million tons of rice, ahead of Vietnam (around 7.7 million tons) and Thailand (around 7 million tons).

The FAO also revised upward 2012 global paddy rice production by almost one million tons since January estimates to around 731.2 million tons (about 487.5 million tons, milled basis). Paddy rice production in 2013 is forecast at around 746.7 million tons (about 497.7 million tons, milled basis), up about 2% or around 16 million tons from 2012.



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Silica gel replacement – Activated Clay Desiccant

Activated Clay Overview

Activated Clay consists of highly absorbent natural clay mixed with Calcium Chloride.
It is typically used for the protection of goods in containers over long distances and through various climate zones.
Activated Clay is ideal for goods shipped in jute bags, cardboard cartons, wooden cases or crates and unpacked goods

Activated Clay desiccant can absorb over 70% of its own weight and provide moisture protection for over 45 days. it is very safe in use especially at saturation as the beads remain hard an maintain moisture. It does not leak.

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Activated Clay desiccant is the perfect material to replace silica gel. Its price is competitive, it absorbs more than silica and it fulfills REACH regulation requirements (DMF and Cobalt Chloride free).
Activated Clay desiccant is the perfect silica gel replacement.
Unlike silica gel, Activated Clay desiccant is environmentally friendly, non toxic and can be disposed of as normal waste.
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