MKS Instruments, Inc. provided earnings outlook for first quarter ending March 31, 2019. For the period, the company expects revenue could range from $400 million to $440 million. At these volumes, GAAP net income could range from $0.78 to $1.02 per diluted share and Non-GAAP net earnings could range from $0.95 to $1.18 per diluted share. The financial guidance excludes the effects of announced acquisition of Electro Scientific Industries, Inc. which is expected to close on February 1, 2019.