Patent ID: 7699915

Claim:
A liquid impingement unit comprising: a. a collection chamber partially filled with a buffer solution; b. an air nozzle configured to output air including airborne particles, wherein a first end of the air nozzle is positioned within the collection chamber proximate the buffer solution such that air output from the first end impinges the buffer solution, whereby the airborne particles are collected within the buffer solution; c. a vacuum tube configured to intake air through a first end, wherein the first end of the vacuum tube is positioned within the collection chamber; d. a fluid delivery tube configured to output additional buffer solution through a first end, wherein the fluid delivery tube is positioned within the vacuum tube such that the first end of the fluid delivery tube is positioned within the collection chamber; and e. a cover coupled to the collection chamber, the air nozzle, and the vacuum tube and configured to seal the collection chamber while providing access to the collection chamber for the air nozzle and the vacuum tube.