Table VIII.

Second Series of Assessments: Values of FPM with Each Cascade Impactor System Using DPI “A” with Timer and TPK Controller Options

Impactor	Controller	Sample Duration (s)
			FPM0.94–4.46 μm (% total recovered mass)
NGI	TPK controller	0.5	0.6 ± 0.1
		1.0	9.6 ± 0.6
		4.0	19.9 ± 1.7
			FPM0.76–6.2 μm (% total recovered mass)
ACI	TPK controller	0.5 s	28.3 ± 1.0
		1.0 s	33.5 ± 1.1
		4.0 s	33.4 ± 0.7
	Timer	0.5 s	28.8 ± 2.5
		1.0 s	29.6 ± 3.1
		4.0 s	29.5 ± 2.3

n = 3 replicates/condition; mean±SD