Exhibit 4 (c)(1)



                                 FIRST AMENDMENT



          FIRST   AMENDMENT,   dated  as  of  September  14,  2000,  among  WEST
     PHARMACEUTICAL  SERVICES, INC., a Pennsylvania corporation (the "Company"),
     the direct and indirect subsidiaries of the Company listed on the signature
     pages hereto (together with the Company,  collectively,  the  "Borrowers"),
     the several banks and other  financial  institutions  parties to the Credit
     Agreement (as hereinafter  defined)  (collectively,  the "Banks"),  and PNC
     BANK, NATIONAL ASSOCIATION,  as Agent for the Banks (in such capacity,  the
     "Agent").

                                   WITNESETH:


     WHEREAS,  the  Borrowers,  the Banks and the Agent are  parties to a Credit
Agreement,  dated as of July 26, 2000 (as heretofore  amended,  supplemented  or
otherwise modified, the "Credit Agreement");

     WHEREAS, pursuant to Section 5.9 of the Credit Agreement, the Borrowers are
required within sixty (60) days after the Closing Date to cause certain of their
Subsidiaries to become co-borrowers under the Credit Agreement;

     WHEREAS,  the  Borrowers  have  requested  that the Banks  amend the Credit
Agreement to extend the sixty-day period to one hundred and twenty days; and

     WHEREAS,  the  Required  Banks  have  agreed  to  do so on  the  terms  and
conditions set forth herein.

     NOW,   THEREFORE,   in   consideration  of  the  foregoing  and  for  other
consideration,  the receipt and sufficiency of which is hereby acknowledged, the
parties hereto, intending to be legally bound, hereby agree as follows:

     1. Defined Terms.  Unless  otherwise  defined herein,  terms defined in the
Credit Agreement are used herein as therein defined.

     2. Amendment to Section 5.9 (Notice and Joinder of New  Subsidiaries).  The
second  sentence of Section  5.9 of the Credit  Agreement  is hereby  amended by
deleting the phrase  "sixty (60) days after the Closing  Date" and  inserting in
lieu  thereof  the phrase "one  hundred and twenty  (120) days after the Closing
Date".

     3.  Representations  and  Warranties.  The Borrowers  hereby  represent and
warrant to the Banks and the Agent that:

          (a) There  exists no  Default  or Event of  Default  under the  Credit
     Agreement as amended hereby;

          (b) The  representations  and warranties made in the Credit  Agreement
     are true and correct in all material  respects on and as of the date hereof
     as if made on and as of the date hereof; and



          (c) The execution  and delivery of this  Amendment by and on behalf of
     the Borrowers has been duly authorized by all requisite action on behalf of
     the Borrowers and this Amendment  constitutes the legal,  valid and binding
     obligation of the Borrowers,  enforceable  against them in accordance  with
     its  terms,   except  as  enforceability   may  be  limited  by  applicable
     bankruptcy, insolvency, fraudulent conveyance,  reorganization,  moratorium
     or similar laws affecting the  enforcement of creditors'  rights  generally
     and by  general  equitable  principles  (whether  enforcement  is sought by
     proceedings in equity or at law).

     4.  Effectiveness.  This  Amendment  shall become  effective upon the Agent
receiving  counterparts  hereof duly  executed by the Borrowers and the Required
Banks.

     5. Limited  Effect.  Except as  expressly  amended by this  Amendment,  the
Credit  Agreement shall continue to be, and shall remain,  unaltered and in full
force and effect in accordance  with its terms and the Borrowers  hereby confirm
all of the provisions of the Credit Agreement and the other Loan Documents.

     6. Release.  Recognizing and in consideration of the Banks' and the Agent's
agreement to the  amendments  set forth  herein,  each of the  Borrowers  hereby
waives  and  releases  the Banks and the  Agent and their  officers,  attorneys,
agents, and employees from any liability,  suit, damage,  claim, loss or expense
of any kind or nature  whatsoever and howsoever  arising that such Borrower ever
had or now has  against  any of them  arising out of or relating to any Banks or
the  Agent's  acts or  omissions  with  respect  to this  Amendment,  the Credit
Agreement,  the other Loan Documents or any other matters  described or referred
to herein or therein.

     7. Miscellaneous.

          (a) Expenses.  Each of the Borrowers  agrees to pay all of the Agent's
     reasonable   out-of-pocket   expenses   incurred  in  connection  with  the
     preparation, negotiation and execution of this Amendment including, without
     limitation,  the  reasonable  fees and expenses of Ballard  Spahr Andrews &
     Ingersoll, LLP.

          (b) Governing Law. This  Amendment  shall be governed by and construed
     in accordance with the laws of the Commonwealth of Pennsylvania.

          (c) Successor and Assigns.  The terms and provisions of this Amendment
     shall be binding upon and shall inure to the benefit of the Borrowers,  the
     Agent and the Banks and their respective successors and assigns.

          (d)  Counterparts.  This  Amendment  may be  executed  in one or  more
     counterparts,  each of which shall be deemed to be an original,  and all of
     which shall constitute one and the same instrument.

          (e) Headings.  The headings of any paragraph of this Amendment are for
     convenience only and shall not be used to interpret any provision hereof.

          (f) Modifications. No modification hereof or any agreement referred to
     herein  shall be binding  or  enforceable  unless in writing  and signed on
     behalf of the party against whom enforcement is sought.


     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Amendment to be
duly executed and delivered by their proper and duly  authorized  officers as of
the day and year first above written.



                                      WEST PHARMACEUTICAL SERVICES, INC.


                                       By:   /s/ Stephen M. Heumann
                                       Name:     Stephen M. Heumann
                                       Title:    Vice President




                                       WEST PHARMACEUTICAL SERVICES
                                       OF FLORIDA, INC.

                                       By:   /s/ Stephen M. Heumann
                                       Name:     Stephen M. Heumann
                                       Title:    Vice President




                                       WEST PHARMACEUTICAL SERVICES
                                       LAKEWOOD, INC.

                                       By:   /s/ Stephen M. Heumann
                                       Name:     Stephen M. Heumann
                                       Title:    Vice President




                                       WEST PHARMACEUTICAL SERVICES
                                       GROUP LIMITED

                                       By:    /s/ John R. Gailey III
                                       Name:      John R. Gailey III
                                       Title:     Director



                                       PNC BANK, NATIONAL ASSOCIATION,
                                       as a Bank and as Agent

                                       By:
                                       Name:
                                       Title:



                                       FIRST UNION NATIONAL BANK, as a Bank


                                       By:
                                       Name:
                                       Title:



                                       DRESDNER BANK, AG, NEW YORK AND GRAND
                                       CAYMAN BRANCHES, as a Bank


                                       By:
                                       Name:
                                       Title:


                                       By:
                                       Name:
                                       Title:




                                       WEST PHARMACEUTICAL SERVICES
                                       GROUP LIMITED

                                       By:
                                       Name:
                                       Title:




                                       PNC BANK, NATIONAL ASSOCIATION,
                                       as a Bank and as Agent

                                       By:   /s/ Amy T. Peterson
                                       Name:     Amy T. Peterson
                                       Title:    Vice President



                                       FIRST UNION NATIONAL BANK, as a Bank

                                       By:
                                       Name:
                                       Title:




                                       DRESDNER BANK, AG, NEW YORK AND
                                       GRAND CAYMAN BRANCHES, as a Bank


                                       By:
                                       Name:
                                       Title:



                                       By:
                                       Name:
                                       Title:




                                       WEST PHARMACEUTICAL SERVICES
                                       GROUP LIMITED

                                       By:
                                       Name:
                                       Title:



                                       PNC BANK, NATIONAL ASSOCIATION,
                                       as a Bank and as Agent

                                       By:
                                       Name:
                                       Title:



                                       FIRST UNION NATIONAL BANK, as a Bank

                                       By:   /s/Jeanette A. Griffin
                                       Name:    Jeanette A. Griffin
                                       Title:   Vice President



                                       DRESDNER BANK, AG, NEW YORK AND
                                       GRAND CAYMAN BRANCHES, as a Bank

                                       By:
                                       Name:
                                       Title:


                                       By:
                                       Name:
                                       Title:




                                       WEST PHARMACEUTICAL SERVICES
                                       GROUP LIMITED

                                       By:
                                       Name:
                                       Title:



                                       PNC BANK, NATIONAL ASSOCIATION,
                                       as a Bank and as Agent


                                       By:
                                       Name:
                                       Title:



                                       FIRST UNION NATIONAL BANK, as a Bank

                                       By:
                                       Name:
                                       Title:



                                       DRESDNER BANK, AG, NEW YORK AND
                                       GRAND CAYMAN BRANCHES, as a Bank


                                       By:    /s/ Richard Morris
                                       Name:      Richard Morris
                                       Title:     Senior Vice President



                                       By:    /s/ Vincent Carotenuto
                                       Name:      Vincent Carotenuto
                                       Title:     Assistant Vice President





                                       NATIONAL CITY BANK, as a Bank

                                       By:    /s/ Thomas J. McDonnell
                                       Name:      Thomas J. McDonnell
                                       Title:     Senior Vice President




                                       THE CHASE MANHATTAN BANK,
                                       as a Bank


                                       By:
                                       Name:
                                       Title:



                                       MELLON BANK, N.A., as a Bank

                                       By:
                                       Name:
                                       Title:




                                       NATIONAL CITY BANK, as a Bank

                                       By:
                                       Name:
                                       Title:



                                       THE CHASE MANHATTAN BANK,
                                       as a Bank

                                       By:  /s/ Thomas F. Conroy, Jr.
                                       Name:    Thomas F. Conroy, Jr.
                                       Title:   Vice President




                                       MELLON BANK, N.A., as a Bank
                                       By:
                                       Name:
                                       Title:




                                       NATIONAL CITY BANK, as a Bank

                                       By:
                                       Name:
                                       Title:



                                       THE CHASE MANHATTAN BANK,
                                       as a Bank

                                       By:
                                       Name:
                                       Title:




                                       MELLON BANK, N.A., as a Bank
                                       By:   /s/ Mark W. Torie
                                       Name:     Mark W. Torie
                                       Title:    VP