Significance and Use When evaluating the particle size
information, if the procedures of the data processing are not
available, the user of the data must make assumptions concerning
the reported data in the event of analytical inconsistencies. In
order for different data sets to be compared it is crucial that
the parties report the analytical techniques and methods or
procedures for evaluating, calculating, compiling or otherwise
processing the data to be reported. Particle size
characterization information can be reported in three levels of
detail in order to satisfy user's needs. Level 1 applies when
only basic information about the material is required, and shall
be provided with each shipment. This level represents the
minimum information that shall be reported. Level 1 information
may be sufficient in such cases as identifying a certain grade
of a material or when detailed knowledge of analytical
methodology is not needed. Level 2 presumes the need for
knowledge of methodology on the user's part and allo