MKS Announces Date for Annual and Special Meeting

Waterloo ON - July 17, 2003: MKS Inc. (MKS) (TSX:MKX), a leading provider of tools to automate, secure, manage and control the software development process, announced today it will convene its annual and special meeting of the holders of common shares of MKS Inc. on Tuesday, September 23, 2003 at 4:00 p.m. EDT. The meeting will take place at the Fairmont Royal York, Alberta Room, 100 Front Street West, Toronto, ON.

About MKS
MKS Inc. (MKS) (TSX:MKX) provides award-winning enterprise software configuration management (SCM) and interoperability software solutions enabling Global 1000 companies to better manage and control the complete process of software development. The Company's family of SCM products offers advanced technology with robust workflow, version control, and impact analysis capabilities. Under its widely known MKS Toolkit brand, MKS provides UNIX-Windows co-existence, and system administration that significantly cut development and administrative costs and reduce time to market while enabling enhanced performance. Founded in 1984 with over 10,000 customers worldwide, MKS has built its brand on the foundation of advanced technology, superior quality and extraordinary customer service. More information about MKS can be found at http://www.mks.com, or by calling 1-800-265-2797 (US & Canada), +49-711-351775-0 (Germany), and +44-1483-733900 (United Kingdom).

MKS and MKS Toolkit are trademarks of MKS Inc. All other trademarks mentioned in this release are the property of their respective owners.

Douglas Sawatzky, CFO

519-883-3252

Email: dsawatzky@mks.com