MKS Instruments, Inc. provides instruments, subsystems and process control solutions that measure, control, power, monitor and analyze critical parameters of manufacturing processes to improve process performance and productivity. The company also provides services relating to the maintenance and repair of its products, software maintenance, installation services and training. It operates through two segments: Vacuum & Analysis and the Light & Motion. The Vacuum & Analysis segment provides a range of instruments, components, subsystems and software, which are derived from its 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, RF & DC power, reactive gas generation and vacuum technology. Its solutions include analytical and control; materials delivery; power, plasma and reactive gas generation; and pressure and vacuum measurement. The Light & Motion segment provides a range of instruments, components and subsystems, which are derived from its competencies in lasers, photonics and optics. It includes lasers, optics and photonics solutions. MKS Instruments was founded in 1961 and is headquartered in Andover, MA.