Table 3.
The linearity (R2), primary pressure for 50% de-agglomeration (DA50), maximum degree of de-agglomeration (DAmax) and critical primary pressure (CPP) of the powders deduced from dry dispersion laser diffraction.
| Powder | R2 | DA50 (Bar) | DAmax | CPP (Bar) |
|---|---|---|---|---|
| BDP | 0.9990 | 0.44 | 1.11 | 2.5 |
| Bud | 0.9995 | 0.32 | 1.08 | 2.0 |
| FP | 0.9049 | 1.15 | 1.13 | 3.0a |
| LH300 | 0.9997 | 0.23 | 1.06 | 2.0 |
| SB | 0.9979 | 0.25 | 1.06 | 1.0 |
| SXb | 0.9711 | 1.45 | 1.35 | 3.5 |
| Tof | 0.9964 | 0.28 | 1.07 | 3.0 |
a
Measured size unchanged for 2 consecutive dispersing pressures only, 3.0 and 3.5 Bar.
b
Particle size data for the lowest PP (i.e. 0.3 Bar) omitted due to poor linearity with these data included (R2 = 0.4532).