Microspherical Particles of Solid Dispersion of Polyvinylpyrrolidone K29-32 for Inhalation Administration

Table 2

Values of maxima (curve peaks) and corresponding standard deviations of the microparticles radius presented in Figure 11. Calculated aerodynamic radii are shown in brackets.

Spray caps hole size	Peak (µm)	Standard deviations (µm)
4.0	0.42 (0.48)	0.31
	1.60 (1.82)	0.35
5.5	1.04 (1.19)	1.01
7.0	0.61 (0.70)	0.64