Reservoir for use with sampling interface for a vehicle

A vessel for solid phase micro-extraction chemical sampling comprising:

• a container having an open end;
• a cap adapted to close said open end, wherein said cap includes a holder adapted to hold a solid phase coated fiber within an interior of said container;
• an inlet at a first location of said vessel;
• an outlet at a second location of said vessel, wherein said inlet and said outlet are adapted to fill said vessel with a material to be exposed to said solid phase coated fiber;
• and
• a diffuser plate attached to said container, wherein said plate is adapted to reduce fluid forces exerted on said solid phase coated fiber and provide laminar fluid flow as material flows from said inlet to said outlet.

A method of exposing a solid phase coated fiber to a material, said method comprising:

• mounting said solid phase coated fiber on a cap;
• placing said cap on an open end of a vessel such that said solid phase coated fiber is positioned within said vessel;
• filling said vessel with an inert material;
• closing quick disconnects at inlets and outlets of said vessel;
• placing said vessel and a sampling interface such that said quick disconnects are open to said sampling interface;
• transporting said sampling interface to a sampling location;
• filling said vessel with a material;
• removing said vessel from said sampling interface, such that said quick disconnects are closed and said material remains within said vessel undistributed;
• removing said cap from said vessel;
• removing said solid phase coated fiber from said cap;
• and
• analyzing said solid phase coated fiber.