Little Pro on 2016-01-13
Granulometry is the measurement of the size distribution in a collection of grains. It is also called particle size distribution test. It is often characterized by the percentage of particles with certain diameter ranges (in micron meters). You can often find it in the section 9 of a safety data sheet (SDS).
Solids in fine powder or dusty form are more hazardous because they more likely to enter air, which may lead to additional hazards such as respiratory hazards or explosive dusts.
Under REACH, this study does not need to be conducted if a chemical is marketed or used in a non solid or granular form.
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