Patent ID: 7665374

Claim:
A device for performing solid phase microextraction of chemicals comprising: a. a rod having a grooved end operable to be coated with an adsorbent coating; b. a shroud surrounding the rod and in contact with a septum operable to maintain a substantially sealed contact between the metallic rod and the shroud; c. wherein the rod is operable to move longitudinally within the shroud such that the rod can moved in a manner such that grooved end can be extended outside of the shroud or retraced within the shroud; d. and wherein the grooved end comprises a series of grooves cut into the rod, wherein the series of grooves comprises a plurality of grooves machined into the rod and wherein each groove is at least about 0.002 inches in depth and wherein spacing between the grooves results in no less than 20 grooves per inch.