Patent 7019285 was granted and assigned to ANALYTICA OF BRANFORD, INC. on March, 2006 by the United States Patent and Trademark Office.
A method and an apparatus which combines at least one linear two dimensional ion guide or a two dimensional ion storage device in tandem with a time-of-flight mass analyzer to analyze ionic chemical species generated by an ion source. The method improves the duty cycle, and therefore, the overall instrument sensitivity with respect to the analyzed chemical species.