EXHIBIT 3.12

As Amended and Restated
April 18, 2000

                          AMENDED AND RESTATED BY-LAWS

                                       OF

                           PACKARD BIOSCIENCE COMPANY

              Incorporated under the Laws of the State of Delaware
              ====================================================

                                    ARTICLE I

                               OFFICES AND RECORDS

         SECTION 1.1. DELAWARE OFFICE. The principal office of the Corporation
in the State of Delaware shall be located in the City of Wilmington, County of
New Castle, and the name and address of its registered agent is Corporation
Service Company, 1013 Centre Road, Wilmington, Delaware.

         SECTION 1.2. OTHER OFFICES. The Corporation may have such other
offices, either within or without the State of Delaware, as the Board of
Directors may designate or as the business of the Corporation may from time to
time require.

         SECTION 1.3. BOOKS AND RECORDS. The books and records of the
Corporation may be kept outside the State of Delaware at such place or places as
may from time to time be designated by the Board of Directors.

                                   ARTICLE II

                                  STOCKHOLDERS

         SECTION 2.1. ANNUAL MEETING. The annual meeting of the stockholders of
the Corporation shall be held on such date and at such place and time as may be
fixed by resolution of the Board of Directors.

         SECTION 2.2. SPECIAL MEETING. Subject to the rights of the holders of
any series of stock having a preference over the Common Stock of the Corporation
as to dividends or upon liquidation ("Preferred Stock") with respect to such
series of Preferred Stock, special meetings of the stockholders may be called
only by the Chairman of the Board of Directors or by the Board



of Directors pursuant to a resolution adopted by a majority of the total number
of directors which the Corporation would have if there were no vacancies (the
"Whole Board").

         SECTION 2.3. PLACE OF MEETING. The Board of Directors or the Chairman
of the Board of Directors, as the case may be, may designate the place of
meeting for any annual meeting or for any special meeting of the stockholders
called by the Board of Directors or the Chairman of the Boardof Directors. If no
designation is so made, the place of meeting shall be the principal office of
the Corporation.

         SECTION 2.4. NOTICE OF MEETING. Written or printed notice, stating the
place, day and hour of the meeting and the purpose or purposes for which the
meeting is called, shall be delivered by the Corporation not less than ten (10)
days nor more than sixty (60) days before the date of the meeting, either
personally or by mail, to each stockholder of record entitled to vote at such
meeting. If mailed, such notice shall be deemed to be delivered when deposited
in the United States mail with postage thereon prepaid, addressed to the
stockholder at his address as it appears on the stock transfer books of the
Corporation. Such further notice shall be given as may be required by law. Only
such business shall be conducted at a special meeting of stockholders as shall
have been brought before the meeting pursuant to the Corporation's notice of
meeting. Meetings may be held without notice if all stockholders entitled to
vote are present, or if notice is waived by those not present in accordance with
Section 6.4 of these By-Laws. Any previously scheduled meeting of the
stockholders may be postponed, and (unless the Amended and Restated Certificate
of Incorporation of the Corporation (the "Certificate of Incorporation")
otherwise provides) any special meeting of the stockholders may be cancelled, by
resolution of the Board of Directors upon public notice given prior to the date
previously scheduled for such meeting of stockholders.

         SECTION 2.5. QUORUM AND ADJOURNMENT. Except as otherwise provided by
law or the Certificate of Incorporation, the holders of a majority of the
outstanding shares of the Corporation entitled to vote generally in the election
of directors (the "Voting Stock"), represented in person or by proxy, shall
constitute a quorum at a meeting of stockholders, except that when specified
business is to be voted on by a class or series of stock voting as a class, the
holders of a majority of the shares of such class or series shall constitute a
quorum of such class or series for the transaction of such business. The
Chairman of the meeting or a majority of the shares so represented may adjourn
the meeting from time to time, whether or not there is such a quorum. No notice
of the time and place of adjourned meetings need be given except as required by
law. The stockholders present at a duly called meeting at which a quorum is
present may continue to transact business until adjournment, notwithstanding the
withdrawal of enough stockholders to leave less than a quorum.

         SECTION 2.6. PROXIES. At all meetings of stockholders, a stockholder
may vote by proxy executed in writing (or in such manner prescribed by the
General Corporation Law of the State of Delaware) by the stockholder, or by his
duly authorized attorney in fact.

         SECTION 2.7. NOTICE OF STOCKHOLDER BUSINESS AND NOMINATIONS.

         (A)      ANNUAL MEETINGS OF STOCKHOLDERS. (1) Nominations of persons
for election to the Board of Directors of the Corporation and the proposal of
business to be



considered by the stockholders may be made at an annual meeting
of stockholders (a) pursuant to the Corporation's notice of meeting, (b) by or
at the direction of the Board of Directors or (c) by any stockholder of the
Corporation who was a stockholder of record at the time of giving of notice
provided for in this By-Law, who is entitled to vote at the meeting and who
complied with the notice procedures set forth in this By-Law.

                  (2) For nominations or other business to be properly brought
before an annual meeting by a stockholder pursuant to clause (c) of paragraph
(A) (1) of this By-Law, the stockholder must have given timely notice thereof in
writing to the Secretary of the Corporation and such other business must be a
proper matter for stockholder action. To be timely, a stockholder's notice shall
be delivered to the Secretary at the principal executive offices of the
Corporation not later than the close of business on the 90th day nor earlier
than the close of business on the 120th day prior to the first anniversary of
the preceding year's annual meeting; provided, however, that in the event that
the date of the annual meeting is more than 30 days before or more than 60 days
after such anniversary date, notice by the stockholder to be timely must be so
delivered not earlier than the close of business on the 120th day prior to such
annual meeting and not later than the close of business on the later of the 90th
day prior to such annual meeting or the 10th day following the day on which
public announcement of the date of such meeting is first made. In no event shall
the public announcement of an adjournment of an annual meeting commence a new
time period for the giving of a stockholder's notice as described above. Such
stockholder's notice shall set forth (a) as to each person whom the stockholder
proposes to nominate for election or reelection as a director all information
relating to such person that is required to be disclosed in solicitations of
proxies for election of directors in an election contest, or is otherwise
required, in each case pursuant to Regulation 14A under the Securities Exchange
Act of 1934, as amended (the "Exchange Act") and Rule 14a-11 thereunder
(including such person's written consent to being named in the proxy statement
as a nominee and to serving as a director if elected); (b) as to any other
business that the stockholder proposes to bring before the meeting, a brief
description of the business desired to be brought before the meeting, the
reasons for conducting such business at the meeting and any material interest in
such business of such stockholder and the beneficial owner, if any, on whose
behalf the proposal is made; and (c) as to the stockholder giving the notice and
the beneficial owner, if any, on whose behalf the nomination or proposal is made
(i) the name and address of such stockholder, as they appear on the
Corporation's books, and of such beneficial owner and (ii) the class and number
of shares of the Corporation which are owned beneficially and of record by such
stockholder and such beneficial owner.

                  (3) Notwithstanding anything in the second sentence of
paragraph (A) (2) of this By-Law to the contrary, in the event that the number
of directors to be elected to the Board of Directors of the Corporation is
increased and there is no public announcement naming all of the nominees for
director or specifying the size of the increased Board of Directors made by the
Corporation at least 100 days prior to the first anniversary of the preceding
year's annual meeting, a stockholder's notice required by this By-Law shall also
be considered timely, but only with respect to nominees for any new positions
created by such increase, if it shall be delivered to the Secretary at the
principal executive offices of the Corporation not later than the close of
business on the 10th day following the day on which such public announcement is
first made by the Corporation.


         (B)      SPECIAL MEETINGS OF STOCKHOLDERS. Only such business shall be
conducted at a special meeting of stockholders as shall have been brought before
the meeting pursuant to the Corporation's notice of meeting. Nominations of
persons for election to the Board of Directors may be made at a special meeting
of stockholders at which directors are to be elected pursuant to the
Corporation's notice of meeting (a) by or at the direction of the Board of
Directors or (b) by any stockholder of the Corporation who is a stockholder of
record at the time of giving of notice provided for in this By-Law, who shall be
entitled to vote at the meeting and who complies with the notice procedures set
forth in this By-Law. In the event the Corporation calls a special meeting of
stockholders for the purpose of electing one or more directors to the Board of
Directors, any such stockholder may nominate a person or persons (as the case
may be), for election to such position(s) as specified in the Corporation's
notice of meeting, if the stockholder's notice required by paragraph (A) (2) of
this By-Law shall be delivered to the Secretary at the principal executive
offices of the Corporation not earlier than the close of business on the 120th
day prior to such special meeting and not later than the close of business on
the later of the 90th day prior to such special meeting or the 10th day
following the day on which public announcement is first made of the date of the
special meeting and of the nominees proposed by the Board of Directors to be
elected at such meeting. In no event shall the public announcement of an
adjournment of a special meeting commence a new time period for the giving of a
stockholder's notice as described above.

         (C)      GENERAL. (1) Only such persons who are nominated in accordance
with the procedures set forth in this By-Law shall be eligible to serve as
directors and only such business shall be conducted at a meeting of stockholders
as shall have been brought before the meeting in accordance with the procedures
set forth in this By-Law. Except as otherwise provided by law, the Certificate
of Incorporation or the By-Laws of the Corporation, the Chairman of the meeting
shall have the power and duty to determine whether a nomination or any business
proposed to be brought before the meeting was made, or proposed, as the case may
be, in accordance with the procedures set forth in this By-Law and, if any
proposed nomination or business is not in compliance with this By-Law, to
declare that such defective proposal or nomination shall be disregarded.

                  (2) For purposes of this By-Law, "public announcement" shall
mean disclosure in a press release reported by the Dow Jones News Service,
Associated Press or comparable national news service or in a document publicly
filed by the Corporation with the Securities and Exchange Commission pursuant to
Section 13, 14 or 15(d) of the Exchange Act.

                  (3) Notwithstanding the foregoing provisions of this By-Law, a
stockholder shall also comply with all applicable requirements of the Exchange
Act and the rules and regulations thereunder with respect to the matters set
forth in this By-Law. Nothing in this By-Law shall be deemed to affect any
rights of (i) stockholders to request inclusion of proposals in the
Corporation's proxy statement pursuant to Rule 14a-8 under the Exchange Act or
(ii) the holders of any series of Preferred Stock to elect directors under
specified circumstances.

         SECTION 2.8. PROCEDURE FOR ELECTION OF DIRECTORS; REQUIRED VOTE.
Election of directors at all meetings of the stockholders at which directors are
to be elected shall be by ballot, and, subject to the rights of the holders of
any series of Preferred Stock to elect directors under specified circumstances,
a plurality of the votes cast thereat shall elect directors.



Except as otherwise provided by law, the Certificate of Incorporation or these
By-Laws, in all matters other than the election of directors, the affirmative
vote of a majority of the shares present in person or represented by proxy at
the meeting and entitled to vote on the matter shall be the act of the
stockholders.

         SECTION 2.9. INSPECTORS OF ELECTIONS; OPENING AND CLOSING THE POLLS.
The Board of Directors by resolution shall appoint one or more inspectors, which
inspector or inspectors may include individuals who serve the Corporation in
other capacities, including, without limitation, as officers, employees, agents
or representatives, to act at the meetings of stockholders and make a written
report thereof. One or more persons may be designated as alternate inspectors to
replace any inspector who fails to act. If no inspector or alternate has been
appointed to act or is able to act at a meeting of stockholders, the Chairman of
the meeting shall appoint one or more inspectors to act at the meeting. Each
inspector, before discharging his or her duties, shall take and sign an oath
faithfully to execute the duties of inspector with strict impartiality and
according to the best of his or her ability. The inspectors shall have the
duties prescribed by law.

         The Chairman of the meeting shall fix and announce at the meeting the
date and time of the opening and the closing of the polls for each matter upon
which the stockholders will vote at a meeting.

         SECTION 2.10. RECORD DATE FOR ACTION BY WRITTEN CONSENT. In order that
the Corporation may determine the stockholders entitled to consent to corporate
action in writing without a meeting, the Board of Directors may fix a record
date, which record date shall not precede the date upon which the resolution
fixing the record date is adopted by the Board of Directors, and which date
shall not be more than 10 days after the date upon which the resolution fixing
the record date is adopted by the Board of Directors. Any stockholder of record
seeking to have the stockholders authorize or take corporate action by written
consent shall, by written notice to the Secretary, request the Board of
Directors to fix a record date. The Board of Directors shall promptly, but in
all events within 10 days after the date on which such a request is received,
adopt a resolution fixing the record date. If no record date has been fixed by
the Board of Directors within 10 days of the date on which such a request is
received, the record date for determining stockholders entitled to consent to
corporate action in writing without a meeting, when no prior action by the Board
of Directors is required by applicable law, shall be the first date on which a
signed written consent setting forth the action taken or proposed to be taken is
delivered to the Corporation by delivery to its registered office in Delaware,
its principal place of business or to any officer or agent of the Corporation
having custody of the book in which proceedings of meetings of stockholders are
recorded. Delivery made to the Corporation's registered office shall be by hand
or by certified or registered mail, return receipt requested. If no record date
has been fixed by the Board of Directors and prior action by the Board of
Directors is required by applicable law, the record date for determining
stockholders entitled to consent to corporate action in writing without a
meeting shall be at the close of business on the date on which the Board of
Directors adopts the resolution taking such prior action.

         SECTION 2.11. INSPECTORS OF WRITTEN CONSENT. In the event of the
delivery, in the manner provided by Section 2.10, to the Corporation of the
requisite written consent or consents to take corporate action and/or any
related revocation or revocations, the Corporation



shall engage nationally recognized independent inspectors of elections for the
purpose of promptly performing a ministerial review of the validity of the
consents and revocations. For the purpose of permitting the inspectors to
perform such review, no action by written consent without a meeting shall be
effective until such date as the independent inspectors certify to the
Corporation that the consents delivered to the Corporation in accordance with
Section 2.10 represent at least the minimum number of votes that would be
necessary to take the corporate action. Nothing contained in this paragraph
shall in any way be construed to suggest or imply that the Board of Directors or
any stockholder shall not be entitled to contest the validity of any consent or
revocation thereof, whether before or after such certification by the
independent inspectors, or to take any other action (including, without
limitation, the commencement, prosecution or defense of any litigation with
respect thereto, and the seeking of injunctive relief in such litigation).

         SECTION 2.12. EFFECTIVENESS OF WRITTEN CONSENT. Every written consent
shall bear the date of signature of each stockholder who signs the consent and
no written consent shall be effective to take the corporate action referred to
therein unless, within 60 days of the earliest dated written consent received in
accordance with Section 2.10, a written consent or consents signed by a
sufficient number of holders to take such action are delivered to the
Corporation in the manner prescribed in Section 2.10.

                                   ARTICLE III

                               BOARD OF DIRECTORS

         SECTION 3.1. GENERAL POWERS. The business and affairs of the
Corporation shall be managed under the direction of the Board of Directors. In
addition to the powers and authorities by these By-Laws expressly conferred upon
them, the Board of Directors may exercise all such powers of the Corporation and
do all such lawful acts and things as are not by statute or by the Certificate
of Incorporation or by these By-Laws required to be exercised or done by the
stockholders.

         SECTION 3.2. NUMBER, TENURE AND QUALIFICATIONS. Subject to the rights
of the holders of any series of Preferred Stock to elect directors under
specified circumstances, the number of directors shall be fixed from time to
time exclusively pursuant to a resolution adopted by a majority of the Whole
Board. In the absence of such resolution, the Board of Directors shall consist
of at least three (3), and no more than twelve (12), directors. The term of
office of each of the directors elected at any annual meeting of stockholders
shall be three (3) years, with each director to hold office until his or her
successor shall have been duly elected and qualified. A director may, but need
not, be a stockholder of the Corporation.

         SECTION 3.3. REGULAR MEETINGS. A regular meeting of the Board of
Directors shall be held without other notice than this By-Law immediately after,
and at the same place as, the Annual Meeting of Stockholders. The Board of
Directors may, by resolution, provide the time and place for the holding of
additional regular meetings without other notice than such resolution.



         SECTION 3.4. SPECIAL MEETINGS. Special meetings of the Board of
Directors shall be called at the request of the Chairman of the Board of
Directors, the President or a majority of the Board of Directors then in office.
The person or persons authorized to call special meetings of the Board of
Directors may fix the place and time of the meetings.

         SECTION 3.5. NOTICE. Notice of any special meeting of directors shall
be given to each director at his business or residence in writing by hand
delivery, first-class or overnight mail or courier service, telegram or
facsimile transmission, or orally by telephone. If mailed by first-class mail,
such notice shall be deemed adequately delivered when deposited in the United
States mails so addressed, with postage thereon prepaid, at least five (5) days
before such meeting. If by telegram, overnight mail or courier service, such
notice shall be deemed adequately delivered when the telegram is delivered to
the telegraph company or the notice is delivered to the overnight mail or
courier service company at least twenty-four (24) hours before such meeting. If
by facsimile transmission, such notice shall be deemed adequately delivered when
the notice is transmitted at least twelve (12) hours before such meeting. If by
telephone or by hand delivery, the notice shall be given at least twelve (12)
hours prior to the time set for the meeting. Neither the business to be
transacted at, nor the purpose of, any regular or special meeting of the Board
of Directors need be specified in the notice of such meeting, except for
amendments to these By-Laws, as provided under Section 8.1. A meeting may be
held at any time without notice if all the directors are present or if those not
present waive notice of the meeting in accordance with Section 6.4 of these
By-Laws.

         SECTION 3.6. ACTION BY CONSENT OF BOARD OF DIRECTORS. Any action
required or permitted to be taken at any meeting of the Board of Directors or of
any committee thereof may be taken without a meeting if all members of the Board
or committee, as the case may be, consent thereto in writing, and the writing or
writings are filed with the minutes of proceedings of the Board or committee.

         SECTION 3.7. CONFERENCE TELEPHONE MEETINGS. Members of the Board of
Directors, or any committee thereof, may participate in a meeting of the Board
of Directors or such committee by means of conference telephone or similar
communications equipment by means of which all persons participating in the
meeting can hear each other, and such participation in a meeting shall
constitute presence in person at such meeting.

         SECTION 3.8. QUORUM. Subject to Section 3.9, a whole number of
directors equal to at least a majority of the Whole Board shall constitute a
quorum for the transaction of business, but if at any meeting of the Board of
Directors there shall be less than a quorum present, a majority of the directors
present may adjourn the meeting from time to time without further notice. The
act of the majority of the directors present at a meeting at which a quorum is
present shall be the act of the Board of Directors. The directors present at a
duly organized meeting may continue to transact business until adjournment,
notwithstanding the withdrawal of enough directors to leave less than a quorum.

         SECTION 3.9. VACANCIES. Subject to applicable law and the rights of the
holders of any series of Preferred Stock with respect to such series of
Preferred Stock, and unless the Board of Directors otherwise determines,
vacancies resulting from death, resignation, retirement, disqualification,
removal from office or other cause, and newly created directorships resulting



from any increase in the authorized number of directors, may be filled only by
the affirmative vote of a majority of the remaining directors, though less than
a quorum of the Board of Directors, and directors so chosen shall hold office
for a term expiring at the annual meeting of stockholders at which the term of
office of the class to which they have been elected expires and until such
director's successor shall have been duly elected and qualified. No decrease in
the number of authorized directors constituting the Whole Board shall shorten
the term of any incumbent director.

         SECTION 3.10. EXECUTIVE AND OTHER COMMITTEES. The Board of Directors
may, by resolution adopted by a majority of the Whole Board, designate an
Executive Committee to exercise, subject to applicable provisions of law, all
the powers of the Board in the management of the business and affairs of the
Corporation when the Board is not in session, including without limitation the
power to declare dividends, to authorize the issuance of the Corporation's
capital stock and to adopt a certificate of ownership and merger pursuant to
Section 253 of the General Corporation Law of the State of Delaware, and may, by
resolution similarly adopted, designate one or more other committees. The
Executive Committee and each such other committee shall consist of two or more
directors of the Corporation. The Board may designate one or more directors as
alternate members of any committee, who may replace any absent or disqualified
member at any meeting of the committee. Any such committee, other than the
Executive Committee (the powers of which are expressly provided for herein), may
to the extent permitted by law exercise such powers and shall have such
responsibilities as shall be specified in the designating resolution. In the
absence or disqualification of any member of such committee or committees, the
member or members thereof present at any meeting and not disqualified from
voting, whether or not constituting a quorum, may unanimously appoint another
member of the Board to act at the meeting in the place of any such absent or
disqualified member. Each committee shall keep written minutes of its
proceedings and shall report such proceedings to the Board when required.

         A majority of any committee may determine its action and fix the time
and place of its meetings, unless the Board shall otherwise provide. Notice of
such meetings shall be given to each member of the committee in the manner
provided for in Section 3.5 of these By-Laws. The Board shall have power at any
time to fill vacancies in, to change the membership of, or to dissolve any such
committee. Nothing herein shall be deemed to prevent the Board from appointing
one or more committees consisting in whole or in part of persons who are not
directors of the Corporation; PROVIDED, HOWEVER, that no such committee shall
have or may exercise any authority of the Board.

         SECTION 3.11. REMOVAL. Subject to the rights of the holders of any
series of Preferred Stock with respect to such series of Preferred Stock, any
director, or the entire Board of Directors, may be removed from office at any
time, but only for cause and only by the affirmative vote of the holders of at
least 80 percent of the voting power of all of the then-outstanding shares of
Voting Stock, voting together as a single class.

         SECTION 3.12. RECORDS. The Board of Directors shall cause to be kept a
record containing the minutes of the proceedings of the meetings of the Board
and of the stockholders, appropriate stock books and registers and such books of
records and accounts as may be necessary for the proper conduct of the business
of the Corporation.



                                   ARTICLE IV

                                    OFFICERS

         SECTION 4.1. ELECTED OFFICERS. The elected officers of the Corporation
shall be a Chairman of the Board of Directors, a President, a Secretary, a
Treasurer, one or more Vice Presidents, and such other officers (including,
without limitation, a Chief Financial Officer) as the Board of Directors from
time to time may deem proper. The Chairman of the Board of Directors shall be
chosen from among the directors, and may, but need not, be an officer of the
Corporation. All officers elected by the Board of Directors shall each have such
powers and duties as generally pertain to their respective offices, subject to
the specific provisions of this ARTICLE IV, or as may be prescribed from time to
time by the Board of Directors. Such officers shall also have such powers and
duties as from time to time may be conferred by the Board of Directors or by any
committee thereof. The Board or any committee thereof may from time to time
elect, or the Chairman of the Board of Directors or the President may appoint,
such other officers (including one or more Assistant Vice Presidents, Assistant
Secretaries, Assistant Treasurers, and Assistant Controllers) and such agents,
as may be necessary or desirable for the conduct of the business of the
Corporation. Such other officers and agents shall have such duties and shall
hold their offices for such terms as shall be provided in these By-Laws or as
may be prescribed by the Board or such committee or by the Chairman of the Board
of Directors or the President, as the case may be.

         SECTION 4.2. ELECTION AND TERM OF OFFICE. The elected officers of the
Corporation shall be elected annually by the Board of Directors at the regular
meeting of the Board of Directors held after the annual meeting of the
stockholders. If the election of officers shall not be held at such meeting,
such election shall be held as soon thereafter as convenient. Each officer shall
hold office until his successor shall have been duly elected and shall have
qualified or until his death or until he shall resign, but any officer may be
removed from office at any time by the affirmative vote of a majority of the
Whole Board or, except in the case of an officer or agent elected by the Board,
by the Chairman of the Board of Directors or the President. Such removal shall
be without prejudice to the contractual rights, if any, of the person so
removed.

         SECTION 4.3. CHAIRMAN OF THE BOARD. The Chairman of the Board of
Directors shall preside at all meetings of the stockholders and of the Board of
Directors and shall be the Chief Executive Officer of the Company. The Chairman
of the Board of Directors shall be responsible for the general management of the
affairs of the Corporation and shall perform all duties incidental to his office
which may be required by law and all such other duties as are properly required
of him by the Board of Directors. He shall make reports to the Board of
Directors and the stockholders, and shall see that all orders and resolutions of
the Board of Directors and of any committee thereof are carried into effect. The
Chairman of the Board of Directors may also serve as President, if so elected by
the Board.

         SECTION 4.4. PRESIDENT. The President shall act in a general executive
capacity and shall assist the Chairman of the Board of Directors in the
administration and operation of the Corporation's business and general
supervision of its policies and affairs. The President shall, in the absence of
or because of the inability to act of the Chairman of the Board of Directors,



perform all duties of the Chairman of the Board of Directors and preside at all
meetings of stockholders and of the Board of Directors.

         SECTION 4.5. VICE-PRESIDENTS. Each Vice President shall have such
powers and shall perform such duties as shall be assigned to him by the Board of
Directors.

         SECTION 4.6. CHIEF FINANCIAL OFFICER. The Chief Financial Officer (if
any) shall be a Vice President and act in an executive financial capacity. He
shall assist the Chairman of the Board of Directors and the President in the
general supervision of the Corporation's financial policies and affairs.

         SECTION 4.7. TREASURER. The Treasurer shall exercise general
supervision over the receipt, custody and disbursement of corporate funds. The
Treasurer shall cause the funds of the Corporation to be deposited in such banks
as may be authorized by the Board of Directors, or in such banks as may be
designated as depositaries in the manner provided by resolution of the Board of
Directors. He shall have such further powers and duties and shall be subject to
such directions as may be granted or imposed upon him from time to time by the
Board of Directors, the Chairman of the Board of Directors or the President.

         SECTION 4.8. SECRETARY. The Secretary shall keep or cause to be kept in
one or more books provided for that purpose, the minutes of all meetings of the
Board, the committees of the Board and the stockholders; he shall see that all
notices are duly given in accordance with the provisions of these By-Laws and as
required by law; he shall be custodian of the records and the seal of the
Corporation (except to the extent some other person is authorized to have
custody and possession thereof by resolution of the Board of Directors) and
affix and attest the seal to all stock certificates of the Corporation (unless
the seal of the Corporation on such certificates shall be a facsimile, as
hereinafter provided) and affix and attest the seal to all other documents to be
executed on behalf of the Corporation under its seal; and he shall see that the
books, reports, statements, certificates and other documents and records
required by law to be kept and filed are properly kept and filed; and in
general, he shall perform all the duties incident to the office of Secretary and
such other duties as from time to time may be assigned to him by the Board, the
Chairman of the Board of Directors or the President.

         SECTION 4.9. REMOVAL AND COMPENSATION. Any officer elected, or agent
appointed, by the Board of Directors may be removed by the affirmative vote of a
majority of the Whole Board whenever, in their judgment, the best interests of
the Corporation would be served thereby. Any officer or agent appointed by the
Chairman of the Board of Directors or the President may be removed by him
whenever, in his judgment, the best interests of the Corporation would be served
thereby. The officers shall receive such salary or compensation as may be
determined by the Compensation Committee, or in the absence of such a committee,
by the Board of Directors. No elected officer shall have any contractual rights
against the Corporation for compensation by virtue of such election beyond the
date of the election of his successor, his death, his resignation or his
removal, whichever event shall first occur, except as otherwise provided in an
employment contract or under an employee deferred compensation plan.



         SECTION 4.10. VACANCIES. A newly created elected office and a vacancy
in any elected office because of death, resignation, or removal may be filled by
the Board of Directors for the unexpired portion of the term at any meeting of
the Board of Directors. Any vacancy in an office appointed by the Chairman of
the Board of Directors or the President because of death, resignation, or
removal may be filled by the Chairman of the Board of Directors or the
President.

                                    ARTICLE V

                        STOCK CERTIFICATES AND TRANSFERS

         SECTION 5.1. STOCK CERTIFICATES AND TRANSFERS. The interest of each
stockholder of the Corporation shall be evidenced by certificates for shares of
stock in such form as the appropriate officers of the Corporation may from time
to time prescribe. The shares of the stock of the Corporation shall be
transferred on the books of the Corporation by the holder thereof in person or
by his attorney, upon surrender for cancellation of certificates for at least
the same number of shares, with an assignment and power of transfer endorsed
thereon or attached thereto, duly executed, with such proof of the authenticity
of the signature as the Corporation or its agents may reasonably require.

         The certificates of stock shall be signed, countersigned and registered
in such manner as the Board of Directors may by resolution prescribe, which
resolution may permit all or any of the signatures on such certificates to be in
facsimile. In case any officer, transfer agent or registrar who has signed or
whose facsimile signature has been placed upon a certificate has ceased to be
such officer, transfer agent or registrar before such certificate is issued, it
may be issued by the Corporation with the same effect as if he were such
officer, transfer agent or registrar at the date of issue.

         SECTION 5.2. LOST, STOLEN OR DESTROYED CERTIFICATES. No certificate for
shares of stock in the Corporation shall be issued in place of any certificate
alleged to have been lost, destroyed or stolen, except on production of such
evidence of such loss, destruction or theft and on delivery to the Corporation
of a bond of indemnity in such amount, upon such terms and secured by such
surety, as the Board of Directors or any financial officer may in its or his
discretion require.

                                   ARTICLE VI

                            MISCELLANEOUS PROVISIONS

         SECTION 6.1. FISCAL YEAR. The fiscal year of the Corporation shall
begin on the first day of January and end on the thirty-first day of December of
each year.

         SECTION 6.2. DIVIDENDS. The Board of Directors may from time to time
declare, and the Corporation may pay, dividends on its outstanding shares in the
manner and upon the terms and conditions provided by law and the Certificate of
Incorporation.

         SECTION 6.3. SEAL. The corporate seal shall have enscribed thereon the
words "Corporate Seal", the year of incorporation and around the margin thereof
the words "Packard BioScience Company - Delaware."



         SECTION 6.4. WAIVER OF NOTICE. Whenever any notice is required to be
given to any stockholder or director of the Corporation under the provisions of
the General Corporation Law of the State of Delaware or these By-Laws, a waiver
thereof in writing, signed by the person or persons entitled to such notice,
whether before or after the time stated therein, shall be deemed equivalent to
the giving of such notice. Neither the business to be transacted at, nor the
purpose of, any annual or special meeting of the stockholders or the Board of
Directors or committee thereof need be specified in any waiver of notice of such
meeting.

         SECTION 6.5. AUDITS. The accounts, books and records of the Corporation
shall be audited upon the conclusion of each fiscal year by an independent
certified public accountant selected by the Board of Directors, and it shall be
the duty of the Board of Directors to cause such audit to be done annually.

         SECTION 6.6. RESIGNATIONS. Any director or any officer, whether elected
or appointed, may resign at any time by giving written notice of such
resignation to the Chairman of the Board of Directors, the President, or the
Secretary, and such resignation shall be deemed to be effective as of the close
of business on the date said notice is received by the Chairman of the Board of
Directors, the President, or the Secretary, or at such later time as is
specified therein. No formal action shall be required of the Board of Directors
or the stockholders to make any such resignation effective.

         SECTION 6.7. INDEMNIFICATION AND INSURANCE. (A) The Corporation shall,
to the fullest extent permitted by Section 145 of the General Corporation Law of
the State of Delaware, as the same may be amended and supplemented, indemnify
any and all persons whom it shall have power to indemnify under said section
from and against any and all of the expenses, liabilities or other matters
referred to in or covered by said section, and the indemnification provided for
herein shall not be deemed exclusive of any other rights to which those
indemnified may be entitled under the Certificate of Incorporation or any
agreement, vote of stockholders or disinterested directors or otherwise, both as
to action in another capacity while holding such office, and shall continue as
to a person who had ceased to be a director, officer, employee or agent and
shall inure to the benefit of the heirs, executors and administrators of such a
person.

         No director shall be personally liable to the Corporation or its
stockholders for monetary damages for any breach of fiduciary duty by such
director in his capacity as a director; provided, however, that a director shall
be liable to the extent provided by applicable law (i) for the breach of the
director's duty of loyalty to the Corporation or its stockholders, (ii) for acts
or omissions not in good faith or which involve intentional misconduct or a
knowing violation of law, (iii) pursuant to Section 174 of the Delaware General
Corporation Law, or (iv) for any transaction from which the director derived an
improper personal benefit.

         (B)      To obtain indemnification under this By-Law, a claimant shall
submit to the Corporation a written request, including therein or therewith such
documentation and information as is reasonably available to the claimant and is
reasonably necessary to determine whether and to what extent the claimant is
entitled to indemnification. Upon written request by a claimant for
indemnification pursuant to the first sentence of this paragraph (B), a
determination, if required by applicable law, with respect to the claimant's
entitlement thereto shall be made as follows: (1) if requested by the claimant,
by Independent Counsel (as hereinafter defined), or



(2) if no request is made by the claimant for a determination by Independent
Counsel, (i) by the Board of Directors by a majority vote of a quorum consisting
of Disinterested Directors (as hereinafter defined), or (ii) if a quorum of the
Board of Directors consisting of Disinterested Directors is not obtainable or,
even if obtainable, such quorum of Disinterested Directors so directs, by
Independent Counsel in a written opinion to the Board of Directors, a copy of
which shall be delivered to the claimant, or (iii) if a quorum of Disinterested
Directors so directs, by the stockholders of the Corporation. In the event the
determination of entitlement to indemnification is to be made by Independent
Counsel at the request of the claimant, the Independent Counsel shall be
selected by the Board of Directors unless there shall have occurred within two
years prior to the date of the commencement of the action, suit or proceeding
for which indemnification is claimed a "Change of Control" as defined in the
Packard BioScience Company 2000 Stock Incentive Plan, in which case the
Independent Counsel shall be selected by the claimant unless the claimant shall
request that such selection be made by the Board of Directors. If it is so
determined that the claimant is entitled to indemnification, payment to the
claimant shall be made within 10 days after such determination.

         (C)      If a claim under paragraph (A) of this By-Law is not paid in
full by the Corporation within thirty days after a written claim pursuant to
paragraph (B) of this By-Law has been received by the Corporation, the claimant
may at any time thereafter bring suit against the Corporation to recover the
unpaid amount of the claim and, if successful in whole or in part, the claimant
shall be entitled to be paid also the expense of prosecuting such claim. It
shall be a defense to any such action (other than an action brought to enforce a
claim for expenses incurred in defending any proceeding in advance of its final
disposition where the required undertaking, if any is required, has been
tendered to the Corporation) that the claimant has not met the standard of
conduct which makes it permissible under the General Corporation Law of the
State of Delaware for the Corporation to indemnify the claimant for the amount
claimed, but the burden of proving such defense shall be on the Corporation.
Neither the failure of the Corporation (including its Board of Directors,
Independent Counsel or stockholders) to have made a determination prior to the
commencement of such action that indemnification of the claimant is proper in
the circumstances because he or she has met the applicable standard of conduct
set forth in the General Corporation Law of the State of Delaware, nor an actual
determination by the Corporation (including its Board of Directors, Independent
Counsel or stockholders) that the claimant has not met such applicable standard
of conduct, shall be a defense to the action or create a presumption that the
claimant has not met the applicable standard of conduct.

         (D)      If a determination shall have been made pursuant to paragraph
(B) of this By-Law that the claimant is entitled to indemnification, the
Corporation shall be bound by such determination in any judicial proceeding
commenced pursuant to paragraph (C) of this By-Law.

         (E)      The Corporation shall be precluded from asserting in any
judicial proceeding commenced pursuant to paragraph (C) of this By-Law that the
procedures and presumptions of this By-Law are not valid, binding and
enforceable and shall stipulate in such proceeding that the Corporation is bound
by all the provisions of this By-Law.

         (F)      Expenses incurred by an officer or director of the Corporation
in defending a civil or criminal action, suit or proceeding shall be paid by the
Corporation in advance of the final disposition of such action, suit or
proceeding upon receipt of an undertaking by or on behalf of



such officer or director to repay such amount if it shall be ultimately
determined that such officer or director is not entitled to be indemnified by
the Corporation as authorized by the Delaware General Corporation Law. Such
expenses incurred by other employees and agents of the Corporation may be so
paid upon such terms and conditions, if any, as the Board of Directors deems
appropriate.

         (G)      The right to indemnification and the payment of expenses
incurred in defending a proceeding in advance of its final disposition conferred
in this By-Law shall not be exclusive of any other right which any person may
have or hereafter acquire under any statute, provision of the Certificate of
Incorporation, By-Laws, agreement, vote of stockholders or Disinterested
Directors or otherwise.

         (H)      The Corporation may maintain insurance, at its expense, to
protect itself and any director, officer, employee or agent of the Corporation
or another corporation, partnership, joint venture, trust or other enterprise
against any expense, liability or loss, whether or not the Corporation would
have the power to indemnify such person against such expense, liability or loss
under the General Corporation Law of the State of Delaware. To the extent that
the Corporation maintains any policy or policies providing such insurance, each
such director or officer, and each such agent or employee to which rights to
indemnification have been granted as provided in paragraph (J) of this By-Law,
shall be covered by such policy or policies in accordance with its or their
terms to the maximum extent of the coverage thereunder for any such director,
officer, employee or agent.

         (I)      The Corporation may, to the extent authorized from time to
time by the Board of Directors, grant rights to indemnification, and rights to
be paid by the Corporation the expenses incurred in defending any proceeding in
advance of its final disposition, to any employee or agent of the Corporation to
the fullest extent of the provisions of this By-Law with respect to the
indemnification and advancement of expenses of directors and officers of the
Corporation.

         (J)      If any provision or provisions of this By-Law shall be held to
be invalid, illegal or unenforceable for any reason whatsoever: (1) the
validity, legality and enforceability of the remaining provisions of this By-Law
(including, without limitation, each portion of any paragraph of this By-Law
containing any such provision held to be invalid, illegal or unenforceable, that
is not itself held to be invalid, illegal or unenforceable) shall not in any way
be affected or impaired thereby; and (2) to the fullest extent possible, the
provisions of this By-Law (including, without limitation, each such portion of
any paragraph of this By-Law containing any such provision held to be invalid,
illegal or unenforceable) shall be construed so as to give effect to the intent
manifested by the provision held invalid, illegal or unenforceable.

         (K)      For purposes of this By-Law:

                  (1)      "DISINTERESTED DIRECTOR" means a director of the
         Corporation who is not and was not a party to the matter in respect of
         which indemnification is sought by the claimant.

                  (2)      "INDEPENDENT COUNSEL" means a law firm, a member of
         a law firm, or an independent practitioner, that is experienced in
         matters of corporation law and shall



         include any person who, under the applicable standards of professional
         conduct then prevailing, would not have a conflict of interest in
         representing either the Corporation or the claimant in an action to
         determine the claimant's rights under this By-Law.

         (L)      Any notice, request or other communication required or
permitted to be given to the Corporation under this By-Law shall be in writing
and either delivered in person or sent by telecopy, telex, telegram, overnight
mail or courier service, or certified or registered mail, postage prepaid,
return receipt requested, to the Secretary of the Corporation and shall be
effective only upon receipt by the Secretary.

         (M)      No amendment to or repeal of this By-Law shall apply to or
have any effect on the liability or alleged liability of any director of the
Corporation for or with respect to any acts or omissions of such director
occurring prior to such amendment or repeal, nor shall any such amendment or
repeal have any adverse effect on the right to indemnification or the obligation
of the Corporation to pay in advance expenses incurred by an officer or director
of the Corporation in defending any action, suit or proceeding arising out of or
with respect to any acts or omissions occurring prior to such amendment or
repeal.

                                   ARTICLE VII

                            CONTRACTS, PROXIES, ETC.

         SECTION 7.1. CONTRACTS. Except as otherwise required by law, the
Certificate of Incorporation or these By-Laws, any contracts or other
instruments may be executed and delivered in the name and on the behalf of the
Corporation by such officer or officers of the Corporation as the Board of
Directors may from time to time direct. Such authority may be general or
confined to specific instances as the Board may determine. The Chairman of the
Board of Directors, the President or any Vice President may execute bonds,
contracts, deeds, leases and other instruments to be made or executed for or on
behalf of the Corporation. Subject to any restrictions imposed by the Board of
Directors or the Chairman of the Board of Directors, the President or any Vice
President of the Corporation may delegate contractual powers to others under his
jurisdiction, it being understood, however, that any such delegation of power
shall not relieve such officer of responsibility with respect to the exercise of
such delegated power.

         SECTION 7.2. PROXIES. Unless otherwise provided by resolution adopted
by the Board of Directors, the Chairman of the Board of Directors, the President
or any Vice President may from time to time appoint an attorney or attorneys or
agent or agents of the Corporation, in the name and on behalf of the
Corporation, to cast the votes which the Corporation may be entitled to cast as
the holder of stock or other securities in any other corporation, any of whose
stock or other securities may be held by the Corporation, at meetings of the
holders of the stock or other securities of such other corporation, or to
consent in writing, in the name of the Corporation as such holder, to any action
by such other corporation, and may instruct the person or persons so appointed
as to the manner of casting such votes or giving such consent, and may execute
or cause to be executed in the name and on behalf of the Corporation and under
its corporate seal or otherwise, all such written proxies or other instruments
as he may deem necessary or proper in the premises.



                                  ARTICLE VIII

                                   AMENDMENTS

         SECTION 8.1. AMENDMENTS. These By-Laws may be altered, amended, or
repealed at any meeting of the Board of Directors or of the stockholders,
provided notice of the proposed change was given in the notice of the meeting
and, in the case of a meeting of the Board of Directors, in a notice given not
less than two days prior to the meeting; PROVIDED, HOWEVER, that, in the case of
amendments by stockholders, notwithstanding any other provisions of these
By-Laws or any provision of law which might otherwise permit a lesser vote or no
vote.