DIN Dry Desiccants (Type B)

Characteristics of DIN Dry Type B (dust-proof) desiccant according to DIN 55473

The envelope of DIN Dry B desiccant according to DIN 55473 consists of a dust-proof material. It is described as dust-proof, as the abrasion between the small beads produces very few dust particles that can pass through the outer material. According to DIN 55473, dust-proof means that no more than 1 mg of dust may pass through the envelope, regardless of the amount of desiccant units. Here, a desiccant unit (DU) describes the quantity of desiccant needed to absorb at last 6.0 g of water vapour at 23 °C (± 2 °C) air temperature and 40 % relative humidity.

The membrane of the envelope is so dense that virtually nothing can escape. Composed of continuous fibres, Tyvek® satisfies the criteria for this kind of material. Because the fabric has no fibre ends, the material is exposed to lower abrasion and hence produces less dust. It is also considered extremely tear-resistant, moisture-resistant and tight. These properties ensure that the desiccant pouch can adsorb moisture for longer.

Pouch sizes

DIN Dry Type B can be ordered in multiple desiccant units (DU) / pouch sizes:

1/6 DU, 1/3 DU, 1/2 DU, 1 DU, 2 DU, 4 DU, 8 DU, 16 DU, and 32 DU

Available Variants

DIN Dry Type A (low-dust)

Do you not know how much desiccant is needed to protect your products? For a precise calculation of your individual requirements, use our desiccant calculator.