MKS Instruments, Inc. is a global provider of instruments, subsystems and process control solutions that measures, controls, powers, delivers, monitors and analyzes critical parameters of advanced manufacturing processes. The Company operates through two segments, including the Vacuum & Analysis segment and the Light & Motion segment. The Vacuum & Analysis segment provides a range of instruments, components, subsystems and software, which are derived from its core competencies in pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, residual gas analysis, leak detection, control and information technology, ozone generation and delivery, radio frequency (RF) and direct current (DC) power, reactive gas generation and vacuum technology. The Light & Motion segment provides a range of instruments, components and subsystems, which are derived from its core competencies in lasers, photonics and optics.