The present invention is directed to a method for servicing a transaction in a contact center. In one embodiment, a slittable delivery sheath and a method of using the sheath are provided. Indicia may be provided on the first portion for identifying the type of light bulb to be used in a particular socket. The mRNP complex is separated by binding the ligand with a binding molecule specific for the ligand, where the binding molecule is attached to a solid support. In one non-limiting example embodiment, the pulse generator comprises a microcontroller-based pulsed width modulator circuit and the converter circuit comprises a flyback circuit.