如果物理危害的分类取决于物质的颗粒大小，供应商是否必须针对所有颗粒大小进行分类？

如果物理危害的分类取决于物质的颗粒大小，供应商是否必须针对所有颗粒大小进行分类？

In a case where the classification for physical hazards depends on the particle size of a substance, will a supplier have to classify for all particle sizes?

不，这不是必需的。供应商只需根据物质即将投放市场的形式以及其合理预期的使用方式对其进行分类即可。由于粒径可能对测试结果产生重大影响，因此应在相关危害的测试报告中明确说明粒径。这并不意味着为了涵盖同一物质的不同粒径，必须进行多次分类。这意味着必须提供基于已投放市场的粒径的分类。如果市场上有多种粒径，或者粒径在运输或储存过程中可能发生变化，则应采用最坏情况分类方法。这通常意味着使用基于测试可能出现的最小粒径的分类方法。如果粒径与分类、安全处理和使用相关，则应在安全数据表中注明。由于粒径不同而导致的分类偏差信息也应在安全数据表中注明。

No, this is not necessary. A supplier will only have to classify the substance in the form that is going to be placed on the market and in which it can reasonably be expected to be used.As the particle size may have a significant effect on the test result, it should be explicitly specified in the test report for the relevant hazard what the particle size is. This does not mean that several classifications have to be performed in order to cover different particle sizes of the same substance. It means that the classification based on the particle size that is placed on the market has to be provided. In cases where several particle sizes are placed on the market or where the particle size may be altered during transport or storage, a worst-case approach should be used. This would normally imply using the classification based on testing the smallest particle size that could occur. If particle size is relevant for classification and safe handling and use, this should be mentioned in the Safety Data Sheet. Information on deviating classifications due to different particle sizes should be mentioned in the Safety Data Sheet as well.