MKS Instruments is one of the leading worldwide providers of process control solutions for advanced manufacturing processes, such as semiconductor device manufacturing and thin film manufacturing for flat panel displays, optical storage media, architectural glass and electro-optical products. The company also provides technology for medical imaging equipment. Its instruments, components and subsystems incorporate sophisticated technologies to power, measure, control and monitor complex gas-related semiconductor manufacturing processes. MKS Instruments also offers a wide variety of analog and digital automatic pressure control instruments and valves. The controllers range from simple analog manual tuning units to adaptive digital signal processing systems. MKS Instruments is located in Andover, Mass.