Document:

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                                                                   Exhibit 10.40

                SECOND ADDENDUM TO AGREEMENT AND PLAN OF MERGER
                -----------------------------------------------

This SECOND ADDENDUM TO AGREEMENT AND PLAN OF MERGER is made this December 6,
2000, by and among Kaire Holdings, Incorporated, a Delaware Corporation (the
"Acquiror") whose principle place of business is located at 7348 Bellaire
Avenue, North Hollywood, California 91605, and Classic Care, Inc., a California
Corporation doing business as Classic Care Pharmacy (the "Company") with a
principle place of business located in Los Angeles California, and Steven
Oscherowitz and Sarit Rubenstein (collectively the "Company Shareholders" and or
the "Stash Trust"), with reference to the following:

                                R E C I T A L S
                                ---------------

     WHEREAS; Acquiror has entered into a Agreement and Plan of Merger (the
"Agreement") in May 2000 the subject of which concerns the merging of the
Company into Acquiror; and

     WHEREAS, Since entering into the Agreement, Acquiror has complied with the
terms and conditions of the Agreement, and specifically those terms in sections
2.1 through 2.2 (c) which specify the consideration to be exchanged and the
manner in which it is to be paid (the "Prior Consideration"); and

     WHEREAS, Since entering into the Agreement, The Company Shareholders and
Acquiror collectively secured a financing commitment from KCM, LLC ("KCM") in
September 2000, which provides staged equity financings of $2,500,000 (the
"Enhanced Funding"), and $6,000,000 (the "Structured Facility", collectively the
"Financing"); and

     WHEREAS, Having secured the Financing, the Company Shareholders have
requested the remaining consideration, which under the terms and conditions of
the Agreement consist entirely of 15,500,000 shares of Acquiror's common stock
(the "Merger Shares") be restructured; and

     WHEREAS; the Board's of Director's of Acquiror and the Company Shareholders
deem it advisable and in the best interests of their respective shareholders to
revise the structure of the remaining consideration.

     NOW, THEREFORE, in consideration of the promises and mutual covenants and
agreements set forth herein and elsewhere and in reliance upon the
representations and warranties contained herein, the parties hereto covenant and
agree to revise the structure of the Consideration of Agreement and Plan of
Merger as follows:
<PAGE>

                         RESTRUCTURE OF CONSIDERATION
                         ----------------------------

Acquiror and the Company Shareholders mutually agree that the consideration
exchanged in the Agreement as defined in ARTICLE 2, sections 2.1 (a) (b) and
(c), and 2.2 (a), (b), (c), and (d), and 2.3 therein, shall be restructured
according to the following terms and conditions.

1)   Total Consideration: The total consideration, which includes all Prior
     -------------------
     Consideration, all Additional Cash Payments, and the value of the Merger
     Shares, shall be $9,500,000.00 (the "Acquisition Price").

2)   Prior Consideration: Acquiror has made prior payments to the Company
     -------------------
     Shareholders of $1,000,000.00 cash including interest thereto, and issuance
     15,500,000 of the Merger Shares.

     a)   Valuation of the Merger Shares: Although issued, the value of the
          ------------------------------
          Merger Shares has not been established, nor has value been credited
          toward the Acquisition Price. Valuation of the Merger Shares shall be
          established not later than October 31, 2001. Valuation of each of the
          Merger Shares shall be the average closing price of Acquiror's shares
          during the 10 trading days preceding October 31, 2001. Once valued,
          the total amount of the Merger Shares shall be credited toward the
          Acquisition Price.

3)   Additional Cash Payments: As part of the restructure of the remaining
     ------------------------
     consideration, Acquiror shall pay the Company Shareholders $2,000,000 cash
     (the "Additional Cash"), which shall be credited toward the Acquisition
     Price, and payable according to the Schedule of Payments provided in the
     tables below.

          (The value of the Merger Shares in the table is intended to be an
          example only. The actual valuation may be different.)

                                 Example Table

<TABLE>
                   <S>                                                <C>
                   Acquisition Price                                  $9,500,000
                                                                      ----------

                   Prior Cash Payments                                $1,000,000
                   Additional Cash Payments                           $2,000,000
                   Merger Shares (Valued at 0$.4175)                  $6,500,000
                                                                      ----------
                                                                      $9,500,000
</TABLE>
<PAGE>

4)   Reliance On Outside Funds: It is understood that Acquiror is relying upon
     -------------------------
     the Financing to meet the Schedule of Payments provided below.

     a)   Terms & Conditions of the Financing: The Financing provides an
          -----------------------------------
          Enhanced Funding component of $2,500,000 (gross amount) to be funded
          in three separate disbursements of $750,000, $500,000 and $1,250,000.
          Each disbursement is contingent upon Acquiror completing certain
          predetermined tasks that are defined in the Financing. In addition,
          the Financing provides a second component (the "Structured Facility")
          of $6,000,000, which Acquiror may access subject to certain trading
          volumes of Acquiror's stock.

     b)   No Assurance: Although Acquiror has completed the first task defined
          ------------
          in the Enhanced Financing, and believes that it will complete the
          remaining tasks required under the Enhanced Financing, and further
          believes that the trading volume of its common stock will meet the
          criteria of the Structured Facility, there can be no assurance or
          guarantee that Acquiror will in fact complete such tasks, or that the
          trading volume of its common stock with meet the criteria of the
          Structured Facility, or that KCM will in fact release any or all
          funds, or that KCM will release funds in the amounts or on the dates
          specified in the Schedule of Payments.

     c)   KCM Failure to Perform: KCM failure to release any of the Enhanced
          ----------------------
          Financing or the Structured Facility funds will substantially affect
          Acquiror's ability to meet the remaining Schedule of Payments. This
          may include Acquiror's inability to make even a portion of remaining
          Schedule of Payments.

     d)   Replacement Financing: In the event the KCM should fail in part or in
          ---------------------
          whole to provide funds thereby preventing Acquiror from completing the
          Schedule of Payments, then Acquiror shall use its best efforts to find
          alternative financing in an amount sufficient to complete the Schedule
          of Payments. Such replacement financing shall be on terms no less
          favorable than those contained in the Financing.

     e)   No Penalty: If, through no fault of Acquiror, Acquiror is unable to
          ----------
          meet the Payment Schedule due to the failure of KCM, then Acquiror
          shall not be charged delinquent fees on payments made from the
          Enhanced Financing or the Structured Facility

5)   Schedule of Payments: The Additional Cash shall be paid in an amount equal
     ---------------------
     to 50% of the net proceeds received by Acquiror from the Enhanced
     Financing, and 50% of the net proceeds received by Acquiror from the
     Structured Facility.

     a)   Prior Payment from Enhanced Financing: The Company Shareholders
          -------------------------------------
          acknowledge receipt of Acquiror's $362,500.00 payment made on October
          28, 2000. The balance of funds payable under the Enhanced Financing is
          $796,250.00

              Schedule of Payments Table - The Enhanced Financing

<TABLE>
<CAPTION>
   Date           Gross           Expense             Net            50% Payment          Paid
   ----                           -------                                                 ----
<S>            <C>               <C>              <C>                <C>                <C>
10/25/00       $  750,000.       $ 87,500.        $  662,500.        $  362,500.        10/28/00
12/15/00       $  500,000.       $ 45,000.        $  455,000.        $  227,500.
02/15/01       $1,250,000.       $112,500.        $1,137,500.        $  568,750.
               -----------       ---------        -----------        -----------
  Totals       $2,500,000.       $245,000.        $2,225,000.        $1,158,750.
                             Remaining Balance                       $  841,250.
</TABLE>
<PAGE>

     b)   Structured Facility Payments: The remaining balance of $841,250 is to
          ----------------------------
          be paid from the Structured Facility component of the KCM Financing
          Agreement. That component provides for Acquiror to draw a portion from
          a $6,000,000 reserve each month. The draw is based on a percentage
          formula contained in the Financing Agreement. As a percentage formula,
          the amount of each draw will vary in a manner consistent with the
          variances in trading volume of Acquiror's stock. Therefore, it is
          agreed that Acquiror shall pay the Company Shareholders 50% of the net
          proceeds of each draw until the balance is paid off.

   (The dollar amounts contained in the table below have been provided as an
                                example only.)

             Schedule of Payments Table - The Structured Facility

<TABLE>
     <S>          <C>                <C>             <C>               <C>
         March    $  250,000*        $ 22,500        $  225,000        $112,500
         April    $  250,000*        $ 22,500        $  225,000        $112,500
           May    $  250,000*        $ 22,500        $  225,000        $112,500
          June    $  250,000*        $ 22,500        $  225,000        $112,500
          July    $  250,000*        $ 22,500        $  225,000        $112,500
        August    $  250,000*        $ 22,500        $  225,000        $112,500
     September    $  250,000*        $ 22,500        $  225,000        $112,500
       October    $  250,000*        $ 22,500        $  225,000        $ 53,750
                  ----------         --------        ----------        --------
                  $2,000,000         $180,000        $1,800,000        $841,250
</TABLE>
     c)   Final Payment Date: Acquiror shall pay the entire Additional Cash on
          ------------------
          or before October 31, 2000.

6)   Adjustment for Shortfall: In the event that the total of the Prior Cash
     ------------------------
     payments and the Additional Cash Payments and the proceeds from the sale of
     the Merger Shares, or the value of the Merger Shares does not equal or
     exceed the Total Consideration on or before the Final Payment Date, then
     Acquiror shall pay the Company Shareholders a combination of cash and
     additional shares (the "Shortfall Shares") of Acquiror's common stock on or
     before November 30, 2001.

7)   Liquidity of Acquiror's Shortfall Shares: In the event that no market
     ----------------------------------------
     exists to sell the Shortfall Shares within sixty days of their issuance, or
     that the market to sell the Shortfall Shares is insufficient to liquidate a
     majority of the Shortfall Shares, then Acquiror shall replace the Shortfall
     Shares with capital.

8)   Adjustment for Overpayment/Overvaluation: If at any time during the period
     ----------------------------------------
     of time beginning on December 1, 2000 and continuing through November 30,
     2001, should the value of the Merger Shares (the "Valuation Date") when
     added to the total of the Additional
<PAGE>

     Cash Payments made as of the Valuation Date exceed the Acquisition Price,
     then Acquiror shall not be required to complete the balance of the cash
     payments.

9)   Registration of the Merger Shares. Acquiror agrees to include the Merger
     ---------------------------------
     Shares in the registration statement required by the KCM financing. If KCM
     should disallow the inclusion of the Merger Shares in the registration
     statement, it is understood and agreed that Rule 144 of the Securities
     Exchange Act of 133 (as amended), provides that the Merger Shares will be
     free trading, subject to certain restrictions, one year from the date of
     issuance.

10)  Closure of Acquisition: Upon execution of this Addendum, the acquisition
     ----------------------
     shall be deemed "CLOSED" thereby transferring all rights to Acquiror.
     Acquiror intends to assume immediate operational control of all aspects of
     Classic Care Pharmacy. Commencing November 1, 2000.

11)  No Further Modifications: All other terms of the Agreement and Plan of
     ------------------------
     Merger shall remain intact. The revisions to the consideration are not
     intended to affect eligibility for any tax-exempt status that the Company
     Shareholders are legally entitled to receive.

12)  Binding Agreement: This Addendum is intended to be a binding agreement as
     -----------------
     of the date hereof and supercedes all other understandings whether written
     or oral relating the Agreement and Plan of Merger and all addendums
     thereto. This Addendum is not assignable. The revisions in this addendum
     are not intended to modify or alter the structure of the Agreement and Plan
     of Merger.

IN WITNESS WHEREOF, the parties hereto have executed or caused this Agreement to
be executed effective as of the day and year first above written.

Acquiror                                Company Shareholders /
                                        Stach Trust

_____________________________           _____________________________
 Steven Westlund    Date                 Asher Gottesman   Date

_____________________________           _____________________________
 Owen Naccarato     Date                 Steve Osherowitz  Date

                                        _____________________________
                                         Sarit Rubenstien  DateExhibit 10.19

            AMENDMENT TO REVOLVING CREDIT LOAN AGREEMENT AND GUARANTY

     THIS AGREEMENT (the "Agreement") dated as of the 2nd day of February, 2000,
between FLEET BANK, N.A., with offices at 1125 Route 22 West, Bridgewater, New
Jersey 08807 (the "Bank") and BARRINGER TECHNOLOGIES INC., a Delaware
corporation, with offices at 30 Technology Drive, Warren, New Jersey 07059
("BTI"), BARRINGER INSTRUMENTS INCORPORATED, a New Jersey corporation, with
offices at 30 Technology Drive, Warren, New Jersey 07059 ("BII"), and BARRINGER
RESEARCH LIMITED, a Canadian corporation with offices at 1730 Aimes Boulevard,
Mississauga, Ontario, Canada L4W IVI ("BRL').

                                   WITNESSETH:

     WHEREAS, BTI executed and delivered a revolving credit note to Bank in the
original principal balance not to exceed Five Million and 00/1 00 Dollars
($5,000,000) (the "Revolving Credit Line"); and

     WHEREAS, the advances under the Revolving Credit Line are made by Bank in
accordance with and subject to the terms, covenants, conditions and provisions
of the Revolving Credit Loan Agreement, dated as of March 13, 1998 (as further
amended herein and together with all prior amendments, the "Loan Agreement");

     WHEREAS, BTI and Bank modified the terms of the Loan Agreement pursuant to
a First Loan Modification Agreement, dated as of July 1, 1999 (the "First
Modification Agreement"), which among other things, added Digivision, Inc.
("Digivision"), as a guarantor of the BTI's obligations under the Revolving
Credit Line and the Loan Agreement (collectively, together with all related
documents, the "Loan Documents");

     WHEREAS, BTI has divested itself of Digivision, and the Bank has agreed to
release Digivision from its obligations under the Amended and Restated Unlimited
Guaranty of Payment and Performance, dated as of July 1, 1999 (the "Guaranty")
between Digivision and Bli.

     NOW, THEREFORE, in consideration of the mutual covenants and conditions
contained herein and for other valuable consideration, the parties hereby agree
as follows:

     1. Preamble. Each and every part of the preamble hereof is incorporated
herein by reference as if set forth at length.

     2. Amendments of Loan Documents.

          a. Loan Agreement. Any references to Digivision are removed.

          b. Guaranty. Digivision is released from its obligations under the
     Guaranty. Nothing herein shall release Bil from its obligations under the
     Guaranty.

     3. Representations and Warranties. BTI represents and warrants to the Bank
that the statements, representations and warranties made by BTI in the Loan
Agreement are true and correct in all material respects as of the date hereof.

     4. Affirmation. Except as expressly modified herein, the Loan Documents
remain in full force and effect in accordance with the terms thereof. BTI hereby
ratifies, confirms and approves ail of the terms of the Loan Documents.

     5. Binding Effect. This Agreement shall be binding upon the parties hereto
and their successors and assigns.

     6. Governing Law. This Agreement shall be construed and enforced in
accordance with

<PAGE>

the laws of the State of New Jersey.

     IN WITNESS WHEREOF, the parties have executed this Agreement the day and
year first above written.

WITNESS/ATTEST:
BARRINGER TECHNOLOGIES INC.                  BARRINGER INSTRUMENTS INCORPORATED

By: /s/ RICHARD S. ROSENFELD                 By: /s/  RICHARD S. ROSENFELD
   -------------------------                     ------------------------------
   Name: Richard S. Rosenfeld                    Name: Richard S. Rosenfeld
   Title: VP                                     Title: VP

Attest: /s/ KENNETH WOOD                     Attest: /s/ KENNETH WOOD
      ----------------------                        ---------------------------

BARRINGER RESEARCH LIMITED

By: /s/ STANLEY BINDER
   -------------------------
   Name: Stanley Binder
   Title: Director

Attest: KENNETH WOOD
      ----------------------

FLEET BANK, N.A.

By: /s/   CRAIG W. HEAL
   -------------------------
   Name:  Craig W. Heal
   Title: Director

                                       2

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