impinger

https://doi.org/10.1351/goldbook.I02990
A sampling instrument employing impingement for the collection of particulate matter. Common types are:
  1. the midget impinger employing impingement in 1-10 cm3 water,
  2. the standard impinger employing impingement in 75 cm3 water and
  3. dry impingers.
Impingers are also suitable for sampling certain gases and vapours.
Source:
PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2196 (https://doi.org/10.1351/pac199062112167)