The basic principles of Dimensioning
The amount of desiccant required is usually calculated such that the relative humidity inside the packaging is kept below 40% during transport and storage. For correct dimensioning, all "four moisture types" have to be taken into account. The amounts of desiccant required may either be calculated using formulas or estimated according to experience.
by rule of thumb
Guideline values for cargo containers
Guideline values for storage
according to DIN