Skip to main content
. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: J Occup Environ Hyg. 2013;10(5):250–258. doi: 10.1080/15459624.2013.769077

TABLE V.

Summary of particle size measured by the DiSCmini (DM) and the SMPS reference instrument for tests with polydisperse aerosols.

Test Aerosol Composition Concentration Range* DM SMPS Size Ratio (rs) P-value**
Avg. Geo. Mean Dia. (Std. Dev.) nm Avg. Geo. Mean Dia. (Std. Dev.) nm Avg. Geo. Std. Dev.
NaCl L 181 (10.3) 157 (8.5) 1.9 1.15 0.04
M 240 (2.2) 192 (2.1) 1.6 1.25 <0.01
H 277 (9.1) 153 (7.9) 1.8 1.81 <0.01
Metal L 107 (2.7) 107 (2.6) 1.6 1.00 0.98
M 240 (2.2) 194 (4.2) 1.5 1.24 <0.01
H 176 (3.9) 150 (2.3) 2.3 1.17 <0.01
*

Concentration ranges are: low (L, <103 particles/cm3), medium (M, 103–104 particles/cm3), and high (H, >104 particles/cm3)

**

bold indicates p-value <0.05