New Standard from Last Update.

1. SCOPE

1.1 This standard (Part 4) covers balance method for the determination of particle size distribution by the mass of particles settling under gravity in liquid. This method is based on a direct mass measurement and gives the mass distribution of equivalent spherical particle diameter.

1.2 The methods of determining the particle size distribution described in this standard are applicable to samples in the 1 µm to 100 µm size range and where the sedimentation condition for particle Reynolds number less than 0.25 is satisfied.

2. REFERENCES

The standards listed in Annex A contain provisions that, through references in the text, constitute provisions of this standard. At the time of publication, the edition indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards.