What causes condensation inside the container?

Condensation is a phenomenon caused by a combination of internal and external temperature difference, together with high humidity levels reaching what is known as ‘Dew Point’.

click here to read more

Choosing Your Desiccant?


The sole remedy is to keep the air within the container dry. The cargo and the packaging must be as dry as possible and it is the first priority.

click here to read more

How does DryBag control condensation?

On removing the desiccant from its protecting packaging and putting it in your container, it'll instantly begin absorbing free moisture from the air within the container.

click here to read more

Where and when to use it?


DryBag is specialized in developing
Efficient and innovative
Desiccants for humidity
Protection during
Shipment and storage

click here to read more

Frequently Asked Questions

DryBag contain calcium chloride that aggressively capture and absorb moisture from the air. They dry the air. When the air is dry, there are no moisture problems.

Moisture in containers causes problems such as mold, fungus, mildew, rust decay, lumping, caking, agglomeration and decomposition. Moisture can also cause electronics to malfunction.

Most, but not all. Some cargoes may be so wet that any reasonable number of DryBag get overwhelmed. But DryBag can reliably protect even very difficult cargoes that may contain tons of moisture, such as coffee beans, wood products or paper.

A desiccant is a hydrating agent which attracts moisture from the atmosphere. It adsorbs and holds Particles of water to itself.

Relative humidity measures the amount of moisture in the air. It is expressed in a percentage of how much moisture the air could possibly hold. The wetter or damper the air is, the higher the relative humidity. The drier the air feels, the lower the relative humidity. Thus, 100% humidity is actually rain.

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

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 cannot tell by looking whether wood or cartons are dry. The moisture properties of wood and cartons have an exponential character. It makes a huge difference if your pallets have a moisture content of 20% instead of say 15%.

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

Moisture processes have an exponential character. That means that even a small change in circumstances can have a huge effect on the outcome. DryBag 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”. This is by absorbing moisture from the air and reducing the relative humidity.

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

Much, 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 a cool temperature and then moved into warm conditions suffer damage in the centre of the cargo. This is 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. DryBag protect against this effect even though they are mounted on the container walls.

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 can go wrong. Yet, DryBag are also at their most efficient protecting against condensation. Most other products, such as silica gels, are only effective in very humid conditions and for a short time period before they become over-saturated.

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 DryBag is big, so fewer are required. The cost of an installation is very competitive, even against much inferior alternatives

The number of DryBag 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 2-3 DryBag are enough. For most ”normal” goods 4-6 DryBag is Sufficient. Some cargoes with very difficult moisture properties on long voyages may require up to 16 DryBag.

Many 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 a liner is used without DryBag it could contribute to a kind of pumping effect, drawing moisture out of the cargo and then releasing back into the air. When used together with DryBag the liner will act as a buffer in extreme conditions, this will prevent any container rain from reaching the cargo. Much the same can be said for so called dew cloths.

Moisture diffuses very effectively, even through a seemingly compact cargo. Experience shows that DryBag 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 the grille of each DryBag. If some DryBag have absorbed less moisture than others inside a container, there may be a problem with air access to those DryBag.

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.

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 DryBag to protect against any damage at less cost than your present packaging.

No it is not. Calcium chloride is non-toxic and environmentally safe. 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 DryBag. But should you get splashed by brine just wash off immediately with plenty of fresh water.

Yes. The DryBag does not need to be 'generated' before use. It is always sold in a dry condition, ready for use.

Almost infinitely long time. Practical experience has shown that it can often far exceed this.

DryBag is non-toxic and non-flammable, it is very inert with a very high melting point.and thus can safely be sent by any means of transport.

Unfortunately not. Though common forms of moisture problems such as corrosion, mold or fungus are visible on the cartons, surfaces etc there are some kinds of damage that is not visible. Mostly these damages are internal and visible only when the customer opens the shipments. In the case of devices, they often cease to function the way they should.

The DryBag are made by PP/PE plastic, and it is readily recyclable. Each part of the DryBag is appropriately marked for optimum recycling. Any remaining calcium chloride is easily removed by soaking the DryBag in fresh water.