Produktqualifikation durch Staubprüfungen: Charakterisierung von Prüfstäuben

In order to qualify products with regard to the demands placed on them by environment-specific particular materials, the property profile of the dusts present in the product's surroundings must be known. On the basis of this profile, the effects of the particles on the product-for example on equipment, devices, casings, filters etc. or on constructions must be investigated, both on the macroscopic level and in terms of microprocesses. This knowledge is essential for the property-effect relationship to be formulated with sufficient accuracy and reliability. Dust tests are currently being carried out with the sample dusts investigated within this contribution and described in the regulations. It has been shown, for example, that the sample dusts may show a bi or trimodality, or may have a very specific morphology which determines the product-particle exchange. These properties of the dusts, and the particle size distribution, are generally not mentioned in the available regulations. The effectiveness of the sample dusts in environmental simulation must also be discussed