MKS Declares Quarterly Dividend

Waterloo, ON – June 5, 2007: MKS Inc. (MKS) (TSX: MKX) today announced that its Board of Directors has declared a quarterly cash dividend of US $0.02 per share on the Company's outstanding common shares in accordance with its dividend policy. The cash dividend will be payable on July 16, 2007 to shareholders of record at the close of business on June 29, 2007.

The dividend is designated as an eligible dividend for the purposes of section 89 of the Income Tax Act (Canada).

About MKS
MKS is the premier provider of application lifecycle management solutions for the global 1000. MKS’s flagship ALM solution, MKS Integrity, is the most highly integrated ALM platform in the industry today, spanning all aspects of the software development lifecycle and supporting critical business transformations including SOA, application rationalization and outsourcing. MKS Integrity’s single architecture drives high levels of user productivity, facilitates rapid deployment and process standardization while delivering a complete view of application development activity through real time metrics, trends and reporting. MKS Integrity also provides essential support for IT operations through software deployment and issue management. Founded in 1984, MKS serves more than 10,000 customers in countries across the world. Whether through deployment of MKS’s solution strategically on an enterprise scale, or by leveraging individual components to solve project-level challenges, our customers can use MKS’s software to enable higher levels of process maturity, better manage global development activity and safeguard their most critical business applications and software assets. Under its widely known MKS Toolkit brand, MKS also provides UNIX-Windows co-existence and system administration that significantly cut development and administrative costs and reduce time to market, while enabling enhanced performance. 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), +44-1483-733900 (United Kingdom), +65-6732-8768 (Singapore), +61 3 9674 0454 (Australia) and 1-519-884-2251 (Rest of World).

This news release may contain forward-looking statements that involve risks and uncertainties, which could cause actual results to differ materially from the statements made. When used in this document, the words "may", "would", "could", "will", "intend", "plan", "anticipate", "believe", "estimate", "expect" and similar expressions are intended to identify forward-looking statements. Such statements reflect the Company’s current views with respect to future events and are subject to such risks and uncertainties. Although the Company believes the expectations represented by such forward looking statements are reasonable, there can be no assurance that those expectations will prove to be correct. Many factors could cause the Company’s actual results to differ materially from the statements made including those factors detailed from time to time in filings made by the Company with Canadian securities regulatory authorities including fluctuations in quarterly results, the Company’s focus on the ALM market and the associated complex and lengthy sales cycle, exchange rate fluctuations, management of growth, dependence on and retention of management and key employees, importance of maintenance contracts, economic uncertainty, international sales, dependence on a limited number of products, acquisitions, distribution channels in the interoperability market, potential for undetected errors in software, protection of intellectual property, reliance on third party relationships, limited financial resources, litigation, concentration of ownership, intense competition, rapid technological change and development of the software application management market. Should one or more of these risks or uncertainties materialize, or should assumptions underlying the forward looking statements prove incorrect, actual results may vary materially from those described herein as intended, planned, anticipated or expected. The Company does not intend and does not assume any obligation to update these forward-looking statements.

US and Canada Media Contact:
Douglas Sawatzky, Chief Financial Officer
MKS Inc.
Phone: 519-883-3252
Email: dsawatzky@mks.com