Patent ID: 11951480
Assignee: RESTEK CORPORATION
Field: Measurement (Instruments)
Classification: CPC B  G  H | IPC B

Claim 0:
1. A solid phase microextraction device, comprising:
a substrate having a first planar surface defined by:
a base edge;
a spray edge disposed distal across the substrate from the base edge, the spray edge including a tapering tip extending away from the base edge;
a first lateral edge extending from the base edge to the tapering tip; and
a second lateral edge extending from the base edge to the tapering tip, the second lateral edge being disposed distal across the substrate from the first lateral edge; and

a first sorbent layer disposed on the first planar surface and extending a sampling length from the spray edge toward the base edge, the first sorbent layer including first sorbent particles,
wherein the first sorbent layer is disposed over less than an entire width of the first planar surface from the first lateral edge to the second lateral edge along the sampling length, and
wherein the first sorbent layer includes at least one of channels, reservoir regions remote from the spray edge, channels narrowing toward the tapering tip, finger regions, acute tapers relative to the first planar surface, or combinations thereof protruding from the first planar surface.