PREN 17289-3-2019 Characterization of bulk materials - Determination of a sizeweighted fine fraction and crystalline silica content - Part 3: Sedimentation method
This document specifies the determination of the size weighted fine fraction (SWFF) and the size weighted fine fraction of crystalline silica (SWFFCS) in bulk materials by means of a sedimentation method using a liquid sedimentation technique. The purpose of this document is to allow users to evaluate bulk materials with regard to their sizeweighted fine fraction and crystalline silica content. For preparation of the sample and determination of crystalline silica by XRD and FT-IR see prEN 17289-1:2018. Annex A to Annex E describe specific methods for the evaluation of SWFF for specific bulk materials. This document is applicable for bulk materials which have been fully investigated and validated. The criteria for the materials are described in this document and prEN 17289-2:2018. This includes industrial minerals which can contain crystalline silica such as quartz@ clay@ kaolin@ talc@ feldspar@ mica@ cristobalite@ vermiculite@ diatomaceous earth@ barite@ andalusite@ iron ore@ chromite etc.
PREN 17289-3-2019 history
2019PREN 17289-3-2019 Characterization of bulk materials - Determination of a sizeweighted fine fraction and crystalline silica content - Part 3: Sedimentation method