Table 4 Classification scheme for the width of particle size distributions [43]. It is based on D90/D10, which is the ratio of the 90th and 10th percentile of the particle size distribution. A linear visualization should be preferred for very narrow to narrow particle size distributions, whereas it is advisable to use a logarithmic scale for particle size distributions with a medium to very wide width
From: A practical primer for image-based particle measurements in microplastic research
Width of particle size distribution | D90/D10 |
|---|---|
Monodisperse |  < 1.02 (ideally 1.0) |
Very narrow | 1.02—1.05 |
Narrow | 1.05—1.5 |
Medium | 1.5—4 |
Wide | 4 – 10 |
Very wide |  > 10 |