Desiccant Bags

Update of DIN 55473:2021-07 Packaging aids - Desiccant bags - Technical delivery conditions

This document applies to adsorptive desiccants in sufficiently water vapor permeable bags for use in packages with low water vapor permeability. The purpose of these specifications is to provide uniform standards for evaluating the performance of desiccant bags. Desiccant bags should protect the packaged goods from excessive humidity during transport and storage to prevent corrosion, mold growth and the like. This document was revised by the working committee NA 115-03-04 AA "Desiccants" of the DIN Standards Committee on Packaging (NAVp).

Changes to DIN 55473:2021-07

Compared to DIN 55473:2015-12, the following changes have been made: a) Update from TL 6685-0003 Issue 5 to Issue 6; b) Document adapted to current design rules.

Changes to TL 6685-0003 Issue 6

Environmental compatibility

During manufacture and operation, the laws, legal ordinances, administrative regulations and technical rules and standards in the field of environmental and hazardous substances legislation must be complied with. This applies in particular to compliance with statutory limits and prohibitions on manufacture and use. The use of substances of very high concern according to REACH must be avoided. Environmental compatibility, like technical safety, is a quality feature, whereby the minimum requirement is compliance with existing regulations / laws. The state of the art is to be observed, the state of the art in science is to be strived for as long as this does not require a technical change in the design. The identification of more environmentally friendly/environmentally compatible alternatives is to be regulated in a separate contract, if necessary, depending on the scope. The preparation of a recycling/disposal concept including the indication of the legally compliant disposal routes and the waste code numbers according to the AVV Waste Catalogue Ordinance must be offered if a take-back by the manufacturer has not been agreed. In many cases, reference is made at this point to the disposal/recycling procedures in accordance with Annexes 1 and 2 of the Closed Substance Cycle Waste Management Act. The manufacturer is prepared to make a contractual arrangement for the return of used parts/waste materials, e.g. in the case of commercially available packaging material/batteries. If additional hazardous substances are used in addition to those already contained in the defense material (list of hazardous substances, development status), these must be specified. Furthermore, sustainably produced or recycled raw materials are to be used as far as possible.

Technical requirements - Indicator material

The indicator must be free of cobalt-II(di)-chloride.

What are the concrete changes for you?

• The new standard is binding for all new dry bags to be tested for which the DIN mark is to be applied for.

• All existing DIN certificates based on the old standard DIN 55473:2015-12 must be converted to the new standard for renewal at the latest. On request, however, this can also be done earlier.

• All certificate holders must demonstrate a plan for the implementation of DIN 55473:2015-12 (change of the indicator to the indicator cobalt-II(di)-chloride-free) during the next surveillance audit.

• Changes or extensions of DIN-certified products must be carried out according to the new standard.

• The experts of DIN CERTCO are ready. Our employees know the changes in detail and will be happy to answer your specific questions.