. 2015 Jun 16;124(2):210–219. doi: 10.1289/ehp.1409582

Table 2.

In vitro doses of PEPs and the corresponding consumer inhalation exposure duration.

Administered dose (cells)^a (μg/mL)	SAEC		THP-1
Administered dose (cells)^a (μg/mL)	Delivered dose (cells)^a (μg/mL)	Corresponding consumer inhalation exposure duration to PEPs (hr)^b	Delivered dose (cells)^a (μg/mL)	Corresponding consumer inhalation exposure duration to PEPs (hr)^b
0.5	0.5	15.0	0.26	7.8
5	5	75.2	2.6	39.0
10	10	150.4	5.2	77.9
20	20	300.7	10.4	155.8
30	30	451.1	15.6	233.7
40	40	601.4	20.8	311.5
100	100	1503.6	52.0	778.9
^aIn vitro–administered and delivered doses were based on a 24-hr in vitro exposure. ^bCalculations of the corresponding consumer inhalation exposure duration (hours) were based on the added values of deposition mass flux (μg/m² • min) in the various human airways, excluding head airways: the conducting zone (generations 0 to 16) and the transitional and respiratory zones (generations 17 through 23).