Table 2.

Direct reading instruments used for time resolved studies of particle emissions.

	Personal breathing zone	Emission zone	Background zone	Supply air
Study A	Partector, portable aethalometer	APS, CPC, DMS, DustTrak	APS, CPC, Aethalometer	P-Trak, DustTrak
Study B	Partector, portable aethalometer	APS, CPC, portable aethalometer	APS, CPC, Aethalometer	P-Trak, DustTrak