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                                                                    Exhibit 23.2


                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the incorporation by reference in this Registration
Statement on Form S-8 of our report dated January 28, 2000 relating to the
financial statements, which appears in the 1999 Annual Report to Shareholders
of MKS Instruments, Inc., which is incorporated by reference in MKS
Instruments, Inc.'s Annual Report on Form 10-K for the year ended December 31,
1999. We also consent to the incorporation by reference of our report dated
January 28, 2000 relating to the financial statement schedule, which appears in
such Annual Report on Form 10-K.


/s/ PricewaterhouseCoopers LLP

Boston, Massachusetts
January 26, 2001