Exhibit 10.11

FOURTH AMENDMENT TO

PURCHASE AND SALE AGREEMENT

THIS FOURTH AMENDMENT, dated as of March 20, 2009 (the “Amendment”), to the
PURCHASE AND SALE AGREEMENT, dated as of December 21, 2001 (as amended and
supplemented, the “Agreement”), is among PerkinElmer, Inc. (“PKI”), a
Massachusetts corporation, PerkinElmer Holdings, Inc., a Massachusetts
corporation, PerkinElmer Health Sciences, Inc. (formerly known as PerkinElmer
LAS, Inc.), a Delaware corporation, PerkinElmer Illumination, Inc. (formerly
known as PerkinElmer Optoelectronics NC, Inc.), a Delaware corporation, and
PerkinElmer Canada, Inc., a Canada corporation (each an “Originator” and
collectively, the “Originators”), PerkinElmer Receivables Company, a Delaware
corporation (“Buyer”) and PerkinElmer Sensors, Inc., a Delaware corporation
(“Sensors”).

WITNESSETH

WHEREAS, the Originators and the Buyer have previously entered into the
Agreement pursuant to which the Originators agreed to sell to Buyer, and Buyer
agreed to buy from each of the Originators, all of the Receivables, all Related
Security and all proceeds thereof generated by each such Originator;

WHEREAS, pursuant to a certain Receivables Sale Agreement, dated as of
December 21, 2001, among the Buyer, PerkinElmer, Inc., Windmill Funding
Corporation and The Royal Bank of Scotland plc (successor to ABN AMRO Bank N.V.)
as agent for the Purchasers (the “Agent”) the Buyer has sold an interest in the
Receivables and assigned and granted a security interest in all of Buyer’s
right, title and interest in and to the Agreement, including, without
limitation, interests in the Receivables sold to Buyer pursuant thereto;

WHEREAS, PerkinElmer LAS, Inc. has changed its name to PerkinElmer Health
Sciences, Inc. and PerkinElmer Optoelectronics NC, Inc. has changed its name to
PerkinElmer Illumination, Inc.;

WHEREAS, the parties wish to remove PerkinElmer Optoelectronics SC, Inc. as a
party to the Agreement and as an Originator;

WHEREAS, the parties hereto desire to add Sensors as an Originator under the
Agreement effective as of March 20, 2009;

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, the parties hereto, intending to be legally
bound, agree as follows:

Section 1. Defined Terms. Unless otherwise amended by the terms of this
Agreement, terms used in this Amendment shall have the meanings assigned in the
Agreement.

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

Section 2. Amendments to Agreement. (a) Any and all references to “PerkinElmer
LAS, Inc.” are hereby deemed to read as “PerkinElmer Health Sciences, Inc.”

(b) Any and all references to “PerkinElmer Optoelectronics NC, Inc.” are hereby
deemed to read as “PerkinElmer Illumination, Inc.”

(c) Any and all references to “PerkinElmer Optoelectronics SC, Inc.” appearing
in the Agreement are hereby deleted.

(d) As contemplated by Section 8.1 of the Agreement, effective as of [March 20,
2009] (the “Effective Date”), Sensors hereby sells, transfers, assigns, set over
and otherwise convey to Buyer, and Buyer hereby purchases from Sensors, all
currently existing Receivables, Related Security and all proceeds thereof
originated by Sensors.

(e) From and after the Effective Date, the term “Originator” shall be amended to
include Sensors and delete PerkinElmer Optoelectronics SC, Inc. In addition,
from and after the Effective Date, Sensors agrees to be bound by all of the
terms and conditions applicable to an Originator contained in the Agreement and
the other Transaction Documents.

(f) In connection with the execution of this Amendment, Sensors and the Buyer
agree to deliver each of the documents set forth in Section 7.1 of the
Agreement, to the extent that such documents are applicable.

(g) In connection with the execution and delivery of this Amendment, Sensors
hereby makes, with respect to itself the representations and warranties set
forth in Section 4.1 and Section 4.2 (other than Section 4.2(d)) of the
Agreement. The state of organization of Sensors is the State of Delaware. The
chief executive office of Sensors is located at 940 Winter Street, Waltham,
Massachusetts 02451 with a mailing address at 940 Winter Street, Waltham,
Massachusetts 02451 and has not been located in any other state besides
Massachusetts. Sensors has no trade names and has not conducted business under
any other name.

Section 3. Effectiveness of Agreement. Except as expressly amended by the terms
of this Amendment, all terms and conditions of the Agreement, as amended, shall
remain in full force and effect.

Section 4. Execution in Counterparts, Effectiveness. This Amendment may be
executed by the parties hereto in several counterparts, each of which shall be
executed by the parties hereto and be deemed an original and all of which shall
constitute together but one and the same instrument.

Section 5. Representations. Each of the Originators severally represents and
warrants to the Buyer and its assignee that except as described in the Parent’s
Annual Reports on Form 10-K for the fiscal year ended December 28, 2008, there
has been no material adverse change since December 28, 2008 in (i) such
Originator’s financial condition, business, operations or prospects or (ii) such
Originator’s ability to perform its obligations under any Transaction Document.

 

- 2 -

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

Section 6. Governing Law. This Agreement shall be construed in accordance with
the laws of the State of Illinois, without reference to conflict of law
principles, and the obligations, rights and remedies of the parties hereunder
shall be determined in accordance with the laws of the State of Illinois.

[Signatures Follow]

 

- 3 -

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

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

 

PERKINELMER, INC., as Originator and Initial Collection Agent By   /s/ John L.
Healy   Name:  

John L. Healy

  Title:  

Vice President

PERKINELMER HOLDINGS, INC., as Originator By   /s/ John L. Healy   Name:  

John L. Healy

  Title:  

Vice President

PERKINELMER HEALTH SCIENCES, INC., as Originator By   /s/ John L. Healy   Name:
 

John L. Healy

  Title:  

Vice President

PERKINELMER ILLUMINATION, INC., as Originator By   /s/ John L. Healy   Name:  

John L. Healy

  Title:  

Vice President

 

- 4 -

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

PERKINELMER CANADA, INC., as Originator By   /s/ John L. Healy   Name:  

John L. Healy

  Title:  

Asst. Secretary

PERKINELMER SENSORS, INC., as Originator By   /s/ John L. Healy   Name:  

John L. Healy

  Title:  

Vice President

PERKINELMER RECEIVABLES COMPANY, as Buyer By   /s/ David C. Francisco   Name:  

David C. Francisco

  Title  

Treasurer

 

- 5 -

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

CONSENTED AND AGREED TO:

THE ROYAL BANK OF SCOTLAND PLC

    (SUCCESSOR TO ABN AMRO BANK N.V.), as Agent

By:   GREENWICH CAPITAL MARKETS, INC., as agent By:   /s/ David Viney   Name:  
David Viney   Title:   Managing Director Address:   c/o ABN AMRO Bank N.V.    
540 West Madison Street     27th Floor     Chicago, Illinois 60661    
Attention: Agent     Telephone: (312) 338-3491     Telecopy: (312) 338-0140

 

- 6 -

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

WINDMILL FUNDING CORPORATION By:   /s/ Jill A. Russo   Name:  

Jill A. Russo

  Title:  

Vice President

Address: c/o Global Securitization Services, LLC 68 South Service Road Suite 120
Melville, New York 11747 Attention: Frank B. Bilotta Telephone: (212) 302-5151
Telecopy: (212) 302-8767 With a copy to: The Royal Bank of Scotland plc
Greenwich Capital Markets, Inc., as agent c/o ABN AMRO Bank N.V. 540 West
Madison Street 27th Floor Chicago, Illinois 60661 Attention: Windmill
Administrator Telephone:  (312) 338-3491 Telecopy:  (312) 338-0140

 

- 7 -

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

GUARANTOR’S ACKNOWLEDGMENT AND CONSENT

The undersigned, PerkinElmer, Inc., has heretofore executed and delivered the
Limited Guaranty dated as of December 21, 2001 (as amended and supplemented, the
“Guaranty”) and hereby consents to the Amendment to the Sale Agreement as set
forth above and confirms that the Guaranty and all of the undersigned’s
obligations thereunder remain in full force and effect. The undersigned further
agrees that the consent of the undersigned to any further amendments to the Sale
Agreement shall not be required as a result of this consent having been
obtained, except to the extent, if any, required by the Guaranty referred to
above.

 

PERKINELMER, INC. By:   /s/ David C. Francisco Title:   Vice President &
Treasurer