Document:

SUPPLEMENTAL INDENTURE, DATED APRIL 12, 2004, TO THE INDENTURED DATED 10/10/2001

 EXHIBIT 4.6 
  

SUPPLEMENTAL INDENTURE TO ADD GUARANTORS 
  
 This Supplemental Indenture, dated as of April 12, 2004 (this “Supplemental Indenture” or “Guarantee”), among
ARG Services LLC, EP Scientific Products LLC, and PACTECH, LLC (the “New Guarantors)”, Apogent Technologies Inc. (together with its successors and assigns, the “Company”), each other then existing Guarantor
under the Indenture referred to below, and The Bank of New York, as Trustee under the Indenture referred to below. 
  
 W I T N E S S E T H: 
  
 WHEREAS, the Company, the Guarantors and the Trustee have heretofore executed and delivered an Indenture, dated as of October 10, 2001 (as amended,
supplemented, waived or otherwise modified, the “Indenture”), providing for the issuance of an aggregate principal amount of $300 million of 2.25% Senior Convertible Contingent Debt Securities (“CODES”) due 2021 of the
Company (the “Securities”); 
  
 WHEREAS,
Section 13.5 of the Indenture provides that the Company is required to cause each Subsidiary created or acquired by the Company and which becomes a guarantor under the Credit Agreement to execute and deliver to the Trustee a Supplemental
Indenture pursuant to which such Subsidiary will unconditionally guarantee, on a joint and several basis with the other Guarantors, the full and prompt payment of the principal of, Interest (including with the other Guarantors, the full and prompt
payment of the principal of, Interest (including Contingent Interest) and Additional Amounts, if any, on the Securities on a senior basis; and 
  
 WHEREAS, pursuant to Section 7.1 of the Indenture, the Trustee, the existing Guarantors, the Company and the New Guarantors are authorized to
execute and deliver this Supplemental Indenture to amend the Indenture, without the consent of any Holder; 
  
 NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the New
Guarantors, the Company, the other Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Securities as follows: 
  
 ARTICLE I 
  
 Definitions 
  
 SECTION 1.1. Defined Terms. As used in this Supplemental Indenture, terms defined in the Indenture or in the preamble or recital hereto are used
herein as therein defined, except that the term “Holders” in this Guarantee shall refer to the term “Holders” as defined in the Indenture and the Trustee acting on behalf or for the benefit of such holders. The words
“herein,” “hereof” and “hereby” and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular section hereof. 
  

 1 

 ARTICLE II 
  
 Agreement to be Bound; Guarantee 
  
 SECTION 2.1. Agreement to be Bound. The New Guarantors hereby become a party to the Indenture as a Guarantor and as such will have all of the
rights and be subject to all of the obligations and agreements of a Guarantor under the Indenture. The New Guarantors agree to be bound by all of the provisions of the Indenture applicable to a Guarantor and to perform all of the obligations and
agreements of a Guarantor under the Indenture. 
  
 SECTION 2.2.
Guarantee. The New Guarantors hereby fully, unconditionally and irrevocably guarantee, as primary obligor and not merely as surety, jointly and severally with each other Guarantor, to each Holder of the Securities and the Trustee, the full
and punctual payment when due, whether at maturity, upon redemption or repurchase, by declaration of acceleration or otherwise, of the Obligations pursuant to Article 13 of the Indenture on a senior basis and subject to the terms and conditions of
the Indenture. 
  
 ARTICLE III 
  
 Miscellaneous 
  
 SECTION 3.1. Notices. All notices and other communications to the New
Guarantors shall be given as provided in the Indenture to the New Guarantors, at its address set forth below, with a copy to the Company as provided in the Indenture for notices to the Company. 
  
 SECTION 3.2. Parties. Nothing expressed or mentioned herein is
intended or shall be construed to give any Person, firm or corporation, other than the Holders and the Trustee, any legal or equitable right, remedy or claim under or in respect of this Supplemental Indenture or the Indenture or any provision herein
or therein contained. 
  
 SECTION 3.3. Governing Law. This
Supplemental Indenture shall be governed by the laws-of the State of New York, without regard to conflicts of laws principles thereof. 
  
 SECTION 3.4. Severability Clause. In case any provision in this Supplemental Indenture shall be invalid, illegal or unenforceable, the validity,
legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby and such provision shall be ineffective only to the extent of such invalidity, illegality or unenforceability. 
  
 SECTION 3.5. Ratification of Indenture; Supplemental Indentures Part of
Indenture; Trustee’s Disclaimer. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terns, conditions and provisions thereof shall remain in full force and effect. This Supplemental
Indenture shall form a part of the Indenture for all purposes, and every Holder of Securities heretofore or hereafter authenticated and delivered shall be bound hereby. The Trustee makes no representation or warranty as to the validity or
sufficiency of this Supplemental Indenture. 
  

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 SECTION 3.6. Counterparts. The parties hereto may -sign one or more copies of this Supplemental Indenture in counterparts, all of which together shall constitute one and the same agreement. 
  
 SECTION 3.7. Headings. The headings of the Articles and the sections
in this Guarantee are for convenience of reference only and shall not be deemed to alter or affect the meaning or interpretation of any provisions hereof. 
  
 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed as of the date first above written. 
  

							
	 ARG Services LLC
 PACTECH, LLC
 as Subsidiary Guarantors

		
	 By:
	 	 Nalge Nunc International Corporation

			
	 	 	 By:
	 	/s/ Dennis Brown
	 	 	 	 	

	 	 	 	 	 Name:
	 	 Dennis Brown

	 	 	 	 	 Title:
	 	 Vice President

	
	 EP Scientific Products LLC
 as Subsidiary Guarantor

		
	 By:
	 	 Chase Scientific Glass, Inc.

			
	 	 	 By:
	 	/s/ Dennis Brown
	 	 	 	 	

	 	 	 	 	 Name:
	 	 Dennis Brown

	 	 	 	 	 Title:
	 	 Vice President

	
	 THE BANK OF NEW YORK, as Trustee

			
	 By:
	 	 	 	/s/ Kisha Holder
	 	 	

	 	 	 	 	 Name:
	 	 Kisha Holder

	 	 	 	 	 Title:
	 	 Assistant Vice President

	
	 APOGENT TECHNOLOGIES INC.

			
	 By:
	 	 	 	/s/ Michael K. Bresson
	 	 	

	 	 	 	 	 Name:
	 	 Michael K. Bresson

	 	 	 	 	 Title:
	 	 Executive Vice President – Administration,
 General Counsel and Secretary

  

 3 

					
	 APOGENT HOLDING COMPANY
 APOGENT SERVICE CORPORATION

		
	 By:
	 	/s/ Michael K. Bresson
	 	 	

	 	 	 Name:
	 	 Michael K. Bresson

	 	 	 Title:
	 	 President and Secretary

	
	 ABGENE, INC.
 APOGENT FINANCE COMPANY
 APOGENT TRANSITION CORP.
 (formerly Sybron Transition Corp.)
 BARNSTEAD THERMOLYNE CORPORATION
 BT CANADA HOLDINGS INC.
 CAPITOL VIAL, INC.
 CHASE SCIENTIFIC GLASS, INC.
 CONSOLIDATED TECHNOLOGIES, INC.
 ERIE SCIENTIFIC COMPANY
 ERIE SCIENTIFIC COMPANY OF
 PUERTO RICO
 ERIE UK HOLDING COMPANY
 EVER READY THERMOMETER CO., INC.
 G&P LABWARE HOLDINGS INC.
 GENEVAC INC.
 LAB-LINE INSTRUMENTS, INC.
 LAB VISION CORPORATION
 MATRIX TECHNOLOGIES CORPORATION
 MICROGENICS CORPORATION
 MOLECULAR BIOPRODUCTS, INC.
 NALGE NUNC INTERNATIONAL
 CORPORATION
 NATIONAL SCIENTIFIC COMPANY
 THE NAUGATUCK GLASS COMPANY
 NEOMARKERS, INC.
 NERL DIAGNOSTICS CORPORATION
 OWL SEPARATION SYSTEMS, INC.
 QUALITY SCIENTIFIC PLASTICS, INC.
 REMEL INC.
 RICHARD-ALLAN SCIENTIFIC COMPANY
 ROBBINS SCIENTIFIC CORPORATION
 SAMCO SCIENTIFIC CORPORATION
 SEPARATION TECHNOLOGY, INC.
 SERADYN INC.

		
	 By:
	 	/s/ Michael K. Bresson
	 	 	

	 	 	 Name:
	 	 Michael K. Bresson

	 	 	 Title:
	 	 Vice President and Secretary

  

 4 

							
	 METAVAC LLC

		
	 By:
	 	 The Naugatuck Glass Company

			
	 	 	 By:
	 	/s/ Michael K. Bresson
	 	 	 	 	

	 	 	 	 	 Name:
	 	 Michael K. Bresson

	 	 	 	 	 Title:
	 	 Vice President and Secretary

  

 5SUPPLEMENTAL INDENTURE, DATED APRIL 12, 2004, TO THE INDENTURED DATED 6/2/2003

 EXHIBIT 4.7 
  

SUPPLEMENTAL INDENTURE 
  
 SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of April 12, 2004, among ARG Services LLC, EP Scientific Products
LLC, and PACTECH, LLC (the “Guaranteeing Subsidiaries”), subsidiaries of Apogent Technologies Inc. (or its permitted successor), a Wisconsin corporation (the “Company”), the Company, the other Guarantors (as
defined in the Indenture referred to herein) and The Bank of New York, as trustee under the indenture referred to below (the “Trustee”). 
  
 W I T N E S S E T H 
  
 WHEREAS, the Company has heretofore executed and delivered to the Trustee an indenture (the “Indenture”),
dated as of June 2, 2003 providing for the issuance of 6-1/2% Senior Subordinated Notes due 2013 (the “Notes”); 
  
 WHEREAS, the Indenture provides that under certain circumstances the Guaranteeing Subsidiaries shall execute and deliver to the Trustee a supplemental
indenture pursuant to which the Guaranteeing Subsidiaries shall unconditionally Guarantee all of the Company’s Obligations under the Notes and the Indenture on the terms and conditions set forth herein (the “Subsidiary
Guarantee”); and 
  
 WHEREAS, pursuant to Section 9.01 of
the Indenture, the Trustee is authorized to execute and deliver this Supplemental Indenture. 
  
 NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the parties mutually covenant and agree for the equal and ratable benefit of
the Holders of the Notes as follows: 
  
 1.
CAPITALIZED TERMS. Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture. 
  
 2. AGREEMENT TO GUARANTEE. The Guaranteeing Subsidiaries hereby agrees as follows: 
  
 (a) Along with all Guarantors named in the Indenture, to
jointly and severally Guarantee to each Holder of a Note authenticated and delivered by the Trustee and to the Trustee and its successors and assigns, the Notes or the obligations of the Company hereunder or thereunder, that: 
  
 (i) the principal of, and premium and Liquidated Damages, if
any, and interest on the Notes will be promptly paid in full when due, whether at maturity, by acceleration, redemption or otherwise, and interest on the overdue principal of and interest on the Notes, if any, if lawful, and all other obligations of
the 

  

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Company to the Holders or the Trustee hereunder or thereunder will be promptly paid in full or performed, all in accordance with the terms hereof and
thereof; and 
  
 (ii) in case of any extension of
time of payment or renewal of any Notes or any of such other obligations, that same will be promptly paid in full when due or performed in accordance with the terms of the extension or renewal, whether at stated maturity, by acceleration or
otherwise. Failing payment when due of any amount so Guaranteed or any performance so Guaranteed for whatever reason, the Guarantors shall be jointly and severally obligated to pay the same immediately. 
  
 (b) The obligations hereunder shall be unconditional,
irrespective of the validity, regularity or enforceability of the Notes or the Indenture, the absence of any action to enforce the same, any waiver or consent by any Holder of the Notes with respect to any provisions hereof or thereof, the recovery
of any judgment against the Company, any action to enforce the same or any other circumstance which might otherwise constitute a legal or equitable discharge or defense of a Guarantor. 
  
 (c) The following is hereby waived: diligence, presentment, demand of payment, filing of claims with a court
in the event of insolvency or bankruptcy of the Company, any right to require a proceeding first against the Company, protest, notice and all demands whatsoever. 
  
 (d) This Subsidiary Guarantee shall not be discharged except by complete performance of the obligations
contained in the Notes and the Indenture, and the Guaranteeing Subsidiaries accepts all obligations of a Guarantor under the Indenture. 
  
 (e) If any Holder or the Trustee is required by any court or otherwise to return to the Company, the Guarantors, or any custodian,
trustee, liquidator or other similar official acting in relation to either the Company or the Guarantors, any amount paid by either to the Trustee or such Holder, this Subsidiary Guarantee, to the extent theretofore discharged, shall be reinstated
in full force and effect. 
  
 (f) The
Guaranteeing Subsidiaries shall not be entitled to any right of subrogation in relation to the Holders in respect of any obligations Guaranteed hereby until payment in full of all obligations Guaranteed hereby. 
  
 (g) As between the Guarantors, on the one hand, and the
Holders and the Trustee, on the other hand, (x) the maturity of the obligations Guaranteed hereby may be accelerated as provided in Article 6 of the Indenture for the purposes of this Subsidiary Guarantee, notwithstanding any stay, injunction or
other prohibition preventing such acceleration in respect of the obligations Guaranteed hereby, and (y) in the event of any declaration of acceleration of such obligations as provided in Article 6 of the Indenture, such obligations (whether or

  

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not due and payable) shall forthwith become due and payable by the Guarantors for the purpose of this Subsidiary Guarantee. 
  
 (h) The Guarantors shall have the right to seek contribution
from any nonpaying Guarantor so long as the exercise of such right does not impair the rights of the Holders under the Subsidiary Guarantee. 
  
 (i) Pursuant to Section 10.02 of the Indenture, after giving effect to any maximum amount and all other contingent and fixed liabilities
that are relevant under any applicable bankruptcy or fraudulent conveyance laws, and after giving effect to any collections from, rights to receive contribution from or payments made by or on behalf of any other Guarantor in respect of the
obligations of such other Guarantor under Article 10 of the Indenture, this new Subsidiary Guarantee shall be limited to the maximum amount permissible such that the obligations of such Guarantor under this Subsidiary Guarantee will not constitute a
fraudulent transfer or conveyance. 
  
 3. EXECUTION
AND DELIVERY. Each Guaranteeing Subsidiaries agrees that the Subsidiary Guarantees shall remain in full force and effect notwithstanding any failure to endorse on each Note a notation of such Subsidiary Guarantee.

  
 4. GUARANTEEING SUBSIDIARIES
MAY CONSOLIDATE, ETC. ON CERTAIN TERMS. 
  
 (a) The Guaranteeing Subsidiaries may not sell or otherwise dispose of all substantially all of its assets to, or consolidate with or
merge with or into (whether or not such Guarantor is the surviving Person) another Person, other than the Company or another Guarantor unless: 
  
 (i) immediately after giving effect to such transaction, no Default or Event of Default exists; and 
  
 (ii) either (A) subject to Sections 10.04 and 10.05 of the
Indenture, the Person acquiring the property in any such sale or disposition or the Person formed by or surviving any such consolidation or merger unconditionally assumes all the obligations of that Guarantor, pursuant to a supplemental indenture in
form and substance reasonably satisfactory to the Trustee, under the Notes, the Indenture and the Subsidiary Guarantee on the terms set forth herein or therein; or (B) the Net Proceeds of such sale or other disposition are applied in accordance with
the applicable provisions of the Indenture, including without limitation, Section 4.10 thereof. 
  
 (b) In case of any such consolidation, merger, sale or conveyance and upon the assumption by the successor Person, by supplemental
indenture, executed and delivered to the Trustee and satisfactory in form to the Trustee, of the Subsidiary Guarantee endorsed upon the Notes and the due and punctual performance of all of the covenants and conditions of the Indenture to be
performed by the Guarantor, such successor Person shall succeed to and be 

  

 3 

 
substituted for the Guarantor with the same effect as if it had been named herein as a Guarantor. Such successor Person thereupon may cause to be signed any
or all of the Subsidiary Guarantees to be endorsed upon all of the Notes issuable under the Indenture which theretofore shall not have been signed by the Company and delivered to the Trustee. All the Subsidiary Guarantees so issued shall in all
respects have the same legal rank and benefit under the Indenture as the Subsidiary Guarantees theretofore and thereafter issued in accordance with the terms of the Indenture as though all of such Subsidiary Guarantees had been issued at the date of
the execution hereof. 
  
 (c) Except as set forth
in Articles 4 and 5 and Section 10.05 of Article 10 of the Indenture, and notwithstanding clauses (a) and (b) above, nothing contained in the Indenture or in any of the Notes shall prevent any consolidation or merger of a Guarantor with or into the
Company or another Guarantor, or shall prevent any sale or conveyance of the property of a Guarantor as an entirety or substantially as an entirety to the Company or another Guarantor. 
  
 5. RELEASES. 
  
 (a) In the event of any sale or other disposition of all or substantially all of the assets of any Guarantor, by way of merger,
consolidation or otherwise, or a sale or other disposition of all of the Capital Stock of any Guarantor, in each case to a Person that is not (either before or after giving effect to such transaction) a Subsidiary of the Company, then such Guarantor
(in the event of a sale or other disposition, by way of merger, consolidation or otherwise, of all of the Capital Stock of such Guarantor) or the corporation acquiring the property (in the event of a sale or other disposition of all or substantially
all of the assets of such Guarantor) shall be released and relieved of any obligations under its Subsidiary Guarantee; provided that the Net Proceeds of such sale or other disposition are applied in accordance with the applicable provisions of the
Indenture, including without limitation Section 4.10 of the Indenture. Upon delivery by the Company to the Trustee of an Officers’ Certificate and an Opinion of Counsel to the effect that such sale or other disposition was made by the Company
in accordance with the provisions of the Indenture, including without limitation Section 4.10 of the Indenture, the Trustee shall execute any documents reasonably required in order to evidence the release of any Guarantor from its obligations under
its Subsidiary Guarantee. 
  
 (b) If the Company
designates any Restricted Subsidiary that is a Guarantor as an Unrestricted Subsidiary in accordance with Section 4.18 of the Indenture, then such Guarantor shall be released and relieved of any Obligations under its Subsidiary Guarantee in
accordance with the provisions of the Indenture. 
  
 (c) Upon the release of a Guarantee by a Subsidiary under all then outstanding Credit Facilities and at any time after the termination of certain covenants as provided in Section 4.19 of the Indenture, then such Guarantor shall be released
and relieved of any Obligations under its Subsidiary Guarantee in 

  

 4 

 
accordance with the provisions of the Indenture; provided, however, that in the event that any such Subsidiary thereafter Guarantees any Indebtedness
of the Company under any Credit Facility (or if any released Guarantee under any Credit Facility is reinstated or renewed), then such Subsidiary shall Guarantee the Notes on the terms and conditions set forth in the Indenture. 
  
 (d) Any Guarantor not released from its obligations under
its Subsidiary Guarantee shall remain liable for the full amount of principal of and interest on the Notes and for the other obligations of any Guarantor under the Indenture as provided in Article 10 of the Indenture. 
  
 6. SUBORDINATION. The Notes and the Subsidiary Guarantees are
subordinated to Senior Debt, as defined in the Indenture. To the extent provided in the Indenture, Senior Debt must be paid before the Notes may be paid. Each of the Company and the Guarantors agrees, and each Holder by accepting a Note and a
Subsidiary Guarantee agrees, to the subordination provisions contained in the Indenture. 
  
 7. NO RECOURSE AGAINST OTHERS. No past, present or future director, officer, employee, incorporator, stockholder or agent of the Guaranteeing Subsidiaries,
as such, shall have any liability for any obligations of the Company or any Guaranteeing Subsidiaries under the Notes, any Subsidiary Guarantees, the Indenture or this Supplemental Indenture or for any claim based on, in respect of, or by reason of,
such obligations or their creation. Each Holder of the Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. Such waiver may not be effective to waive
liabilities under the federal securities laws and it is the view of the Commission that such a waiver is against public policy. 
  
 8. NEW YORK LAW TO GOVERN. THE INTERNAL LAW OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE BUT WITHOUT GIVING
EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY. 
  
 9. COUNTERPARTS. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all
of them together represent the same agreement. 
  
 10.
EFFECT OF HEADINGS. The Section headings herein are for convenience only and shall not affect the construction hereof. 
  
 11. THE TRUSTEE. The Trustee shall not be responsible in any manner whatsoever for or in
respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Guaranteeing Subsidiaries and the Company. 
  

 5 

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed, all
as of the date first above written. 
  
 Dated: April 12, 2004

  

							
	 ARG SERVICES LLC

		
	 By:
	 	 Nalge Nunc International Corporation

			
	 	 	 By:
	 	/s/ Michael K. Bresson
	 	 	 	 	

	 	 	 	 	 Name:
	 	 Michael K. Bresson

	 	 	 	 	 Title:
	 	 Vice President and Secretary

	
	 EP SCIENTIFIC PRODUCTS LLC

		
	 By:
	 	 Chase Scientific Glass, Inc.

			
	 	 	 By:
	 	/s/ Michael K. Bresson
	 	 	 	 	

	 	 	 	 	 Name:
	 	 Michael K. Bresson

	 	 	 	 	 Title:
	 	 Vice President and Secretary

	
	 PACTECH, LLC

		
	 By:
	 	 Nalge Nunc International Corporation

			
	 	 	 By:
	 	/s/ Michael K. Bresson
	 	 	 	 	

	 	 	 	 	Name:	 	Michael K. Bresson
	 	 	 	 	Title:	 	Vice President and Secretary
	
	 Apogent Technologies Inc.

			
	 By:
	 	 	 	/s/ Michael K. Bresson
	 	 	

	 	 	 	 	Name:	 	Michael K. Bresson
	 	 	 	 	Title:	 	Executive Vice President – Administration, General Counsel

					
	 The Bank of New York,
 as Trustee

		
	 By:
	 	/s/ Kisha Holder
	 	 	

	 	 	Authorized Signatory

  

 6 

					
	 Existing Guarantors

	
	 APOGENT HOLDING COMPANY
 APOGENT SERVICE CORPORATION

		
	 By:
	 	/s/ Michael K. Bresson
	 	 	

	 	 	Name:	 	Michael K. Bresson
	 	 	Title:	 	President and Secretary

			
	
	 ABGENE INC.
 APOGENT FINANCE COMPANY
 APOGENT TRANSITION CORP.
 BARNSTEAD THERMOLYNE CORPORATION
 BT CANADA HOLDINGS INC.
 CAPITOL VIAL INC.
 CHASE SCIENTIFIC GLASS, INC.
 CONSOLIDATED TECHNOLOGIES, INC.
 ERIE SCIENTIFIC COMPANY
 ERIE SCIENTIFIC COMPANY OF PUERTO RICO
 ERIE UK HOLDING COMPANY
 EVER READY THERMOMETER CO., INC.
 GENEVAC INC.
 G&P LABWARE HOLDINGS INC.
 LAB-LINE INSTRUMENTS, INC.
 LAB VISION CORPORATION
 MATRIX TECHNOLOGIES CORPORATION
 MICROGENICS CORPORATION
 MOLECULAR BIOPRODUCTS, INC.
 NALGE NUNC INTERNATIONAL CORPORATION
 NATIONAL SCIENTIFIC COMPANY
 THE NAUGATUCK GLASS COMPANY
 NEOMARKERS, INC.
 NERL DIAGNOSTICS CORPORATION
 OWL SEPARATION SYSTEMS, INC.
 QUALITY SCIENTIFIC PLASTICS, INC.
 REMEL INC.
 RICHARD-ALLAN SCIENTIFIC COMPANY
 ROBBINS SCIENTIFIC CORPORATION
 SAMCO SCIENTIFIC CORPORATION
 SEPARATION TECHNOLOGY, INC.
 SERADYN INC.

					
		
	 By:
	 	/s/ Michael K. Bresson
	 	 	

	 	 	Name:	 	Michael K. Bresson
	 	 	Title:	 	Vice President and Secretary

  

 7 

					
	 METAVAC LLC

		
	 By:
	 	 The Naugatuck Glass Company

			
	 	 	 By:
	 	/s/ Michael K. Bresson
	 	 	 	 	

	 	 	 	 	Name: Michael K. Bresson
	 	 	 	 	Title: Vice President and Secretary

  

 8

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