An inverter apparatus for driving a plurality of lamp units including a plurality of lamps is provided. The stackable ball grid array or fine ball grid array provides a semiconductor package that is capable of being burned in and tested in a more efficient and cost effective manner than prior known BGA or FBGA semiconductor packages. In accordance with various embodiments of applicants’ teachings a sampling device and method to extract components, such as, for example, analytes, from a fluid is provided.