Attached files

file filename
EXCEL - IDEA: XBRL DOCUMENT - MKS INSTRUMENTS INCFinancial_Report.xls
EX-31.1 - EX-31.1 - MKS INSTRUMENTS INCd838776dex311.htm
EX-31.2 - EX-31.2 - MKS INSTRUMENTS INCd838776dex312.htm
EX-32.1 - EX-32.1 - MKS INSTRUMENTS INCd838776dex321.htm
EX-21.1 - EX-21.1 - MKS INSTRUMENTS INCd838776dex211.htm
EX-10.11 - EX-10.11 - MKS INSTRUMENTS INCd838776dex1011.htm
EX-10.27 - EX-10.27 - MKS INSTRUMENTS INCd838776dex1027.htm
10-K - 10-K - MKS INSTRUMENTS INCd838776d10k.htm

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-78069, 333-78071, 333-78073, 333-31224, 333-54486, 333-54488, 333-54490, 333-90498, 333-90500, 333-90502, 333-116385, 333-116387, 333-116389, 333-127221, 333-161211, and 333-195750) and Form S-3 (Nos. 333-34450 and 333-109753) of MKS Instruments, Inc. of our report dated February 25, 2015 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Boston, Massachusetts

February 25, 2015