SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                               -------------------

                                  SCHEDULE TO
                                  (RULE 13e-4)
                             TENDER OFFER STATEMENT
                                      UNDER

                          SECTION 14(d)(1) OR 13(e)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                               (Amendment No. 4)
                               -------------------

                                PERKINELMER, INC.
         (Name of Subject Company (Issuer) and Filing Person (Offeror))
                               -------------------

              ZERO COUPON CONVERTIBLE DEBENTURES DUE AUGUST 7, 2020
                         (Title of Class of Securities)
                               -------------------

                                   714046 AA 7
                      (CUSIP Number of Class of Securities)
                               -------------------

                            Terrance L. Carlson, Esq.
                    Senior Vice President and General Counsel
                                PerkinElmer, Inc.
                                45 William Street
                               Wellesley, MA 02481
                                 (781) 237-5100
(Name, address and telephone number of person authorized to receive notices and
                   communications on behalf of filing person)

                                    Copy to:

                             David E. Redlick, Esq.
                                Hale and Dorr LLP
                                 60 State Street
                           Boston, Massachusetts 02109
                            Telephone: (617) 526-6000
                            Telecopy: (617) 526-5000
                               -------------------

[ ]   Check the box if the filing relates solely to preliminary
      communications made before the commencement of a tender offer.

      Check the appropriate boxes below to designate any transactions to
      which the statement relates:

        [ ] third-party tender offer subject to Rule 14d-1.

        [X] issuer tender offer subject to Rule 13e-4.

        [ ] going-private transaction subject to Rule 13e-3.

        [ ] amendment to Schedule 13D under Rule 13d-2.

         Check the following box if the filing is a final amendment reporting
the results of the tender offer:  [X]



                                  TENDER OFFER

         This Amendment No. 4 to Issuer Tender Offer Statement on Schedule TO
(the "Statement") is the final amendment being filed with the United States
Securities and Exchange Commission (the "Commission") by PerkinElmer, Inc., a
Massachusetts corporation ("PerkinElmer"), in connection with PerkinElmer's
offer to purchase for cash, on the terms and subject to the conditions set forth
in the Offer to Purchase, dated November 29, 2002 (the "Offer to Purchase"), and
Letter of Transmittal (the "Letter of Transmittal" and, together with the Offer
to Purchase, the "Offer"), any and all of PerkinElmer's outstanding zero coupon
convertible debentures due August 7, 2020 (the "Debentures"). Copies of the
Offer to Purchase and the Letter of Transmittal are filed as exhibits (a)(1)(i)
and (a)(1)(ii), respectively, to the Tender Offer Statement on Schedule TO
originally filed with the Commission on November 29, 2002.

         This Amendment No. 4 amends the Schedule TO in order to report the
final results of the Offer. The Offer expired at 12:00 midnight, New York City
time, on Friday, December 27, 2002. Pursuant to the Offer, $378,709,750
principal amount at maturity of zero coupon convertible debentures due August
7, 2020 were validly tendered and not withdrawn prior to the expiration of the
Offer, all of which were accepted for payment by PerkinElmer on December 28,
2002.

ITEM 12. EXHIBITS.

         The information set forth in Item 12 is hereby amended and supplemented
by adding immediately following the reference to Exhibit (a)(5)(ii) the
following:

         (a)(5)(iii)  Press Release Regarding Completion of the Offer, dated
                      December 28, 2002.


                                    SIGNATURE

         After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this Amendment No. 4 to Schedule TO is true,
complete and correct.

                                          PERKINELMER, INC.

                                      By: /s/ Terrance L. Carlson
                                          -------------------------------
                                          Terrance L. Carlson, Esq.
                                          Senior Vice President, Business
                                          Development, General Counsel and Clerk


Date: December 30, 2002



                                  EXHIBIT INDEX



         Exhibit
         Number                                  Description
         ------                                  -----------
                        
         (a)(1)(i)         Offer to Purchase, dated November 29, 2002.#

         (a)(1)(ii)        Letter of Transmittal, dated November 29, 2002.#

         (a)(1)(iii)       Letter to Clients, dated November 29, 2002.#

         (a)(1)(iv)        Letter to Broker-Dealers, dated November 29, 2002.#

         (a)(1)(v)         Instructions to Form W-9.#

         (a)(5)(i)         Press Release Regarding Offer, dated November 29,
                           2002.#

         (a)(5)(ii)        Press Release Regarding Refinancing Transactions,
                           dated December 26, 2002.#

         (a)(5)(iii)       Press Release Regarding Completion of the Offer,
                           dated December 28, 2002.*

         (b)(1)            Form of Credit Agreement, among PerkinElmer, Inc.,
                           as borrower, the several lenders from time to
                           time parties thereto, Merrill Lynch & Co., Merrill
                           Lynch, Pierce, Fenner and Smith Incorporated, as
                           arranger, Merrill Lynch Capital Corporation, as
                           syndication agent, Societe Generale, as documentation
                           agent, and Bank of America, N.A., as administrative
                           agent.#

         (d)(1)            Indenture, dated August 7, 2000, between PerkinElmer,
                           Inc. (formerly EG&G, Inc.) and Bank One Trust
                           Company, N.A., as successor Trustee (previously filed
                           as Exhibit 4.1 to the EG&G, Inc. Registration
                           Statement on Form S-3 (Registration No. 333-71069),
                           and incorporated herein by reference).

         (d)(2)            First Supplemental Indenture, dated as of August 7,
                           2000, between PerkinElmer, Inc. and Bank One Trust
                           Company, N.A., relating to the Zero Coupon
                           Convertible Debentures due August 7, 2000 (previously
                           filed as Exhibit 4.1 to PerkinElmer's Current Report
                           on Form 8-K, File No. 1-5075, and incorporated herein
                           by reference).


----------
* Filed herewith.

# Previously filed.