Danaher Corporation announced today that it is extending its tender offer for outstanding shares of Microtest, Inc. common stock from the prior expiration date of midnight on Thursday, July 19, 2001 to midnight on Friday, July 20, 2001. Accordingly, the tender offer and withdrawal rights will expire at 12:00 midnight, New York City time, on July 20, 2001, unless Danaher further extends the tender offer. According to a preliminary count by the depositary for the offer, there were tendered and not withdrawn 7,522,888 shares as of 12:00 midnight on July 19, 2001 (excluding 276,925 shares listed on notices of guaranteed delivery received by the depositary), representing approximately 84.66% of the shares of Microtest common stock currently outstanding.

Danaher is extending the offer so that more than 90 percent of the shares of Microtest common stock may be validly tendered and not withdrawn prior to the expiration of the offer. If that occurs, Danaher will be able to use the expedited procedures available under Delaware law for a merger with a 90 percent-owned subsidiary.

Microtest is a leading provider of network test and connectivity products.

Danaher Corporation is a leading manufacturer of Process/Environmental Controls and Tools and Components. ( http://www.danaher.com/ )

This document is neither an offer to purchase nor a solicitation of an offer to sell securities. The tender offer is being made only through an offer to purchase and related letter of transmittal. All stockholders should read the tender offer statement concerning the tender offer that has been filed by Danaher, and the solicitation/recommendation statement that has been filed by Microtest, with the Securities and Exchange Commission ("SEC") and mailed to stockholders. These statements contain important information that stockholders should consider before making any decision regarding tendering their shares. Stockholders can obtain these statements, as well as other filings containing information about Danaher and Microtest, without charge, at the SEC's internet site (http://www.sec.gov/). Copies of the tender offer statement and related materials may also be obtained for free by directing such requests to Danaher's Corporate Secretary. The solicitation/recommendation statement and related materials may also be obtained for free by directing such requests to Microtest's Investor Relations department.

Statements in this document that are not strictly historical may be "forward-looking" statements, which involve risks and uncertainties. These include economic and currency conditions, market demand, pricing, and competitive and technological factors, among others, as set forth in the companies' respective SEC filings.

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SOURCE: Danaher Corporation