Passive sampling badge
AssigneeSkc Co., Ltd.
InventorsDonald Lee Smith, Peter M. Hall
Life of this patent
Estimating the term…
Abstract
A passive air sampler is designed to facilitate emptying granular or particulate adsorbent from it directly into a thermal desorption tube or other vessel for use in an analytical instrument. The preferred form has an adsorbent container in a conical or funnel-like shape.
Claims18
A passive air sampler comprising particulate adsorbent and a container therefor having a generally conical shape, said container including an opening for draining to empty said particulate adsorbent by gravity from said container into a thermal desorption tube for chromatographic analysis.
A passive air sampler comprising a container for granular adsorbent and granular absorbent substantially filling the volume of said container, said container including an outlet neck for said adsorbent, a perforated panel for admitting air to said container, and a stopper for said outlet, said outlet neck being of a shape for mating with the intake opening of a sample-receiving vessel for chemical analysis.
Method of obtaining samples of contaminants in air comprising adsorbing said contaminants on a particulate adsorbent in a passive sampler, connecting a thermal desorption tube to said passive sampler, and draining said particulate adsorbent by gravity from said sampler into said thermal desorption tube.
Dependencies are inferred from the claim text.