TABLE 1.

Effect of particulate type on the number incorporated per particle size fraction for the Collison nebulizer and the FFAG^a

Particle size fraction (μm)	Avgb no. (±SE) of particulates per particle
	Fluospheres		B. atrophaeus spores		E. coli
	Collison	FFAG	Collison	FFAG	Collison	FFAG
0-3	0.82 ± 0.01	0.47 ± 0.02	1.06 ± 0.05	0.80 ± 0.04	0.91 ± 0.03	0.49 ± 0.02
4-8	0.13 ± 0.02	3.31 ± 0.18	1.45 ± 0.08	3.08 ± 0.62	0.87 ± 0.06	5.11 ± 0.12
9-17	0.39 ± 0.07	7.09 ± 0.29	2.80 ± 0.40	53.82 ± 8.64	0.92 ± 0.04	14.67 ± 0.55

^aParticulates were aerosolized from distilled water at a concentration of 10⁹ ml⁻¹ at a flow rate of 50 μl min⁻¹ and a pressure of 16 lb/in² (110,000 Pa).

^bAverages were derived from five representative experiments.