Table 1.

Sizes of cascade impactor slits.

Stage number	Width (mm)	Length (mm)
1	2.60	9.51
2	1.43	9.48
3	0.84	8.91
4	0.43	9.52
5	0.27	9.03
6	0.17	4.64
	Diameter (mm)
7	0.45
8	0.34