MKS Instruments (NASDAQ:MKSI) reported quarterly earnings of $1.71 per share which beat the analyst consensus estimate of $1.44 by 18.75 percent. This is a 44.92 percent increase over earnings of $1.18 per share from the same period last year. The company reported quarterly sales of $936.00 million which beat the analyst consensus estimate of $913.58 million by 2.45 percent. This is a 7.83 percent increase over sales of $868.00 million the same period last year.