Positive and/or negative pressure is used to trap airborne particles against a filter. Positive pressure is provided by low molecular weight gas (He or H) to achieve high particle velocity and high capture percentage. Trapped particles are examined under electron microscope.
Atmospheric particle sampler
NASA Tech Briefs ; 1 , 1
01.03.1976
Sonstige
Keine Angabe
Englisch
Polyport atmospheric gas sampler
NTIS | 1993
|Accurate Airborne Particle Sampler
NTRS | 1985
|NTRS | 2018
|