Exhibit 99.1

              CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO

                             18 U.S.C. SECTION 1350,

                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, H. Lawrence Culp, Jr., certify, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my
knowledge, Danaher Corporation's Annual Report on Form 10-K for the fiscal year
ended December 31, 2002 fully complies with the requirements of Section 13(a) or
15(d) of the Securities Exchange Act of 1934 and that information contained in
such Annual Report on Form 10-K fairly presents in all material respects the
financial condition and results of operations of Danaher Corporation.

Date: March 28, 2003                 By:    /s/ H. Lawrence Culp, Jr.
                                            -------------------------
                                            Name:    H. Lawrence Culp, Jr.
                                            Title:   President and Chief
                                                     Executive Officer


A signed original of this written statement required by Section 906 has been
provided to Danaher Corporation and will be retained by Danaher Corporation and
furnished to the Securities and Exchange Commission or its Staff upon request.