P18.4
Particle Size Distribution — Sieve Analysis
Procedure 14 of 40 · Chapter 18 · §18.1.4
1 table 0 notes
Table 1
| Sieve Designation | Nominal Aperture (µm) | Wire Diameter (µm, typ.) | Maximum Aperture Tolerance (µm) | Cumulative Role |
|---|---|---|---|---|
| R20/3 1,000 µm | 1,000 | ~400 | ±42 | Oversize retention; indicates agglomerates |
| R20 500 µm | 500 | ~250 | ±22 | Coarse fraction; target for spray-dried beads |
| R20 250 µm | 250 | ~160 | ±15 | Primary product fraction; dissolution control |
| R20 125 µm | 125 | ~90 | ±11 | Fine fraction; dusting tendency |
| R20 63 µm | 63 | ~56 | ±8 | Maximum fines; caking and flow risk |