Table 5.

Evaluation of mass concentrations measured with the pDR-1500 with reference to those measured with the SMPS and APS.

Aerosol	Data Pairs	Slope ± Std. Error	Intercept ± Std. Error (μg/m3)	r	R2	% Bias
0.9% Salt Aerosol	21	1.2 ± 0.02	−46 ± 12	0.991	0.99	−3.41,2
5% Salt Aerosol	21	0.9 ± 0.0061,2	−5.0 ± 4.01	0.991	0.99	4.61,2
Arizona Road Dust	18	1.3 ± 0.04	−54 ± 14	0.991	0.98	−2.01,2
Diesel Fume	21	1.1 ± 0.021,2	28 ± 66	0.991	0.99	−9.11,2
Welding Fume	18	1.0 ± 0.021,2	−55 ± 24	0.991	0.99	−1.11,2

¹meets EPA criterion

²meets NOISH criterion