The ability of the Nolan-Pollak counter to function as a "total" particle counter was investigated. Comparison with the UMR Absolute Aitken Nuclei Counter operated at an expansion pressure ratio of 1.33 revealed that in mean, the N-P counter measurements (at an expansion pressure ratio of 1.21) were 30% less. This correction, however, depends on particle nature, concentration and size distribution and assumes that particle losses in the central part of the UMRAAN counter are negligible. © 1982.
J. Podzimek and P. C. Yue, "A Note On The Use Of A Photoelectric Counter For Total Particle Counting," Journal of Aerosol Science, vol. 13, no. 2, pp. 93 - 102, Elsevier, Jan 1982.
The definitive version is available at https://doi.org/10.1016/0021-8502(82)90054-4
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01 Jan 1982