By definition it is SPME, when the sample volume is very much larger, than the volume of the solid phase. The first format that was and still is used is the SPME fiber. But SPME can be so much more. Coated surfaces, grids, flow cells or many more can be used for the extraction.
To reduce or eliminate solvent use and solve matrix problems with simultaneously high sensitivity and fast analysis time are beneficial and are two important advantages of SPME.
With our partners we are able to coat nearly any kind of geometries and formats with adequate solid phases. Not on all carrier materials but on many.