Process for sizing particles using condensation nucleus counting

Details Process for sizing particles using condensation nucleus counting Process for sizing particles using condensation nucleus counting

1989-09-06

1991-06-25

McGraw, Vincent P.

Optics: measuring and testing

With sample preparation

Condensation nuclei detector

356336, G01N 1502, G01N 1514

Patent

active

050261550

ABSTRACT:
A process for counting and sizing particles in gases in the size range of 0.0025 micrometers or greater using condensation nucleus counting wherein the condensing temperature of a saturated working fluid is incrementally adjusted to adjust sensitivity to differing sizes of particles and thus discriminate according to size.

REFERENCES:
patent: 3007367 (1961-11-01), Rich
patent: 3632210 (1972-01-01), Rich
patent: 3806248 (1974-04-01), Sinclair
patent: 4128335 (1978-12-01), Haberl et al.
patent: 4293217 (1981-10-01), Bird, Jr. et al.
patent: 4790650 (1988-12-01), Keady
Stulzenburg, McMurry; "Counting Efficiency of an Ultrafine Aerosol Condensation Nucleus Counter: Theory and Experiment"; Aerosols: Formation & Reactivity, 1986, pp. 786-789.

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