Facts of condensation
Fundamentally there are two different kinds of condensation

(1) Cargo sweat

(2) Container sweat

This occurs when moving cargo from a cold or temperate climate
to a tropical one. The air containing moisture or water vapour
condenses-out on the cargo or its packing.

This is water vapour in the air condensing or forming on the inside
surfaces of the container when moving from tropical or temperate
climates to cooler areas.
Fungi, moulds and mildew do not usually cause any problems below
approximately 55% Relative Humidity.
The effect or onset of corrosion is a function of many variables
where humidity and time are also present. A fixed humidity level
cannot be stated because of the variables, however the lower the
humidity the better.

The type of goods to be protected must be considered when determining
the amount of water or relative humidity that needs to be removed. This
in-turn will determine the quantity of 'Super Dry' poles required in a
container to reduce and hold the humidity at a level that will not cause
damage or deterioration to the products in the container.

 

Humidity or water in goods loaded into a container.

Generally the relative amount of moisture / water in the goods is a factor ofthe type of goods and the relative humidity of the ambient air at the
time of loading. Obviously, tropical air will have a much higher relative
humidity content than say, air in a temperate climate. Consequently,
goods loaded into a container contain moisture or water and water
vapour in the air. For example, if there is 5 tons of furniture in the
container, the furniture by itself would usually have moisture content of
between approximately 8 and 25% depending on timber-type and the
drying process used. This equates to about 400 - 1,250 litres of water.
This moisture, some of which will re-enter the air inside the container, is
the main source of Condensation.

This depends upon :
The weather during the voyage.
The duration of the voyage.
Type of goods, commodities or materials in the container.
The condition of the container.
The sensitivity of the goods.
Moisture inherent in the floor and/or wooden or other types of
pallets or packaging materials.
ABSORTECH Desiccants are ECO "Environmently Friendly" and are free from Dimethyl Fumarate or any other biocides.