Document:

EXHIBIT 4.4

                          See Legend(s) on Reverse Side

                          COMMONWEALTH OF MASSACHUSETTS

-----------                                                          -----------
No. xx                                                               xxxx Shares
-----------                                                          -----------

                          IMPLANT SCIENCES CORPORATION

              Series A 7% Cumulative Convertible Preferred Stock

THIS CERTIFIES THAT                  SPECIMEN                 is the owner of
                    -----------------------------------------
                 xxxxxxxxxxxxxxx                  Shares of the Capital Stock of
--------------------------------------------------
                          IMPLANT SCIENCES CORPORATION

                                    PREFERRED
transferable only on the books of the Corporation by the holder hereof in person
or by Attorney upon surrender of this Certificate properly endorsed.

ON  WITNESS  WHEREOF,  the  said  Corporation  has caused this Certificate to be
signed  by  its  duly  authorized officers and its Corporate Seal to be hereunto
affixed
this         xx           day of         xxx      A.D. 20 xxx
    ----------------------      ------------------       ----

-----------------------------------         -----------------------------------
President                                   Treasurer

                          SHARES [$.01 Par Value] EACH

<PAGE>
THESE SHARES OF PREFERRED STOCK AND THE COMMON STOCK ISSUABLE UPON CONVERSION OF
THE  PREFERRED  STOCK HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
AS  AMENDED, OR, IF APPLICABLE, STATE SECURITIES LAWS. THESE SHARES OF PREFERRED
STOCK  AND  THE COMMON STOCK ISSUABLE UPON CONVERSION OF THE PREFERRED STOCK MAY
NOT  BE  SOLD,  OFFERED  FOR  SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN
EFFECTIVE  REGISTRATION  STATEMENT  AS  TO  THE  PREFERRED STOCK OR COMMON STOCK
ISSUABLE  UPON CONVERSION OF PREFERRED STOCK UNDER SAID ACT AND APPLICABLE STATE
SECURITIES  LAWS  OR  AN  OPINION  OF COUNSEL REASONABLY SATISFACTORY TO IMPLANT
SCIENCES  CORPORATION  THAT  SUCH  REGISTRATION  IS  NOT  REQUIRED.

THE  CORPORATION  IS AUTHORIZED TO ISSUE MORE THAN ONE CLASS OR SERIES OF STOCK.
THE  POWERS,  DESIGNATIONS,  PREFERENCES AND RELATIVE PARTICIPATING, OPTIONAL OR
OTHER  SPECIAL  RIGHTS,  AND  THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF
SUCH PREFERENCES AND/OR RIGHTS OF EACH CLASS OF STOCK OR SERIES OF ANY CLASS ARE
SET  FORTH  IN  THE ARTICLES OF ORGANIZATION OF THE CORPORATION. THE CORPORATION
WILL  FURNISH  A  COPY OF THE ARTICLES OF ORGANIZATION OF THE CORPORATION TO THE
HOLDER  OF  THIS  CERTIFICATE  WITHOUT  CHARGE  UPON  REQUEST.

                                  CERTIFICATE

                                      FOR

                                      xxxxx

                                     SHARES

                                     OF THE

                                  CAPITAL STOCK

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

                          IMPLANT SCIENCES CORPORATION
                             Series A 7% Cumulative
                          Convertible Preferred Stock

                          -----------------------------
                                    ISSUED TO

                                      xxxxx

                                      Date

                                      xxxxx

     For Value Received      hereby sell, assign and transfer unto
                                                                  --------------
                                                                          Shares
-------------------------------------------------------------------------
of  the  Capital  Stock  represented  by  the  within Certificate, and do hereby
irrevocably constitute and appoint
                                  ----------------------------------------------
Attorney to transfer the said Stock on the books of the within named Corporation
with full power of substitution in the premises.

     Dated                      , 20
          ----------------------    ----

     In the presence of

NOTICE.  THE  SIGNATURE  OF  THIS  ASSIGNMENT  MUST CORRESPOND WITH THE NAMES AS
WRITTEN  UPON  THE  FACE  OF  THE  CERTIFICATE,  IN  EVERY  PARTICULAR,  WITHOUT
ALTERATION OR ENLARGEMENT, OR ANY CHANGE WHATEVER.

<PAGE>EXHIBIT 10.69

                          IMPLANT SCIENCES CORPORATION

                          SECURITIES PURCHASE AGREEMENT

                                OCTOBER 7TH, 2002

<PAGE>
<TABLE>
<CAPTION>
                                    TABLE OF CONTENTS

                                                                                  Page
                                                                                  ----
<S>    <C>                                                                        <C>

1.     AGREEMENT  TO  SELL  AND  PURCHASE. . . . . . . . . . . . . . . . . . . .     1

2.     FEES  AND  WARRANTS . . . . . . . . . . . . . . . . . . . . . . . . . . .     2

3.     CLOSING,  DELIVERY  AND  PAYMENT. . . . . . . . . . . . . . . . . . . . .     2

       3.1     Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2

       3.2     Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . .     2

4.     REPRESENTATIONS  AND  WARRANTIES  OF  THE  COMPANY. . . . . . . . . . . .     3

       4.1     Organization,  Good  Standing  and  Qualification . . . . . . . .     3

       4.2     Subsidiaries. . . . . . . . . . . . . . . . . . . . . . . . . . .     3

       4.3     Capitalization;  Voting  Rights . . . . . . . . . . . . . . . . .     3

       4.4     Authorization;  Binding  Obligations. . . . . . . . . . . . . . .     4

       4.5     Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . .     4

       4.6     Agreements;  Action . . . . . . . . . . . . . . . . . . . . . . .     5

       4.7     Obligations  to  Related  Parties . . . . . . . . . . . . . . . .     5

       4.8     Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     6

       4.9     Title  to  Properties  and  Assets;  Liens,  Etc. . . . . . . . .     7

       4.10    Intellectual  Property. . . . . . . . . . . . . . . . . . . . . .     7

       4.11    Compliance  with  Other  Instruments. . . . . . . . . . . . . . .     8

       4.12    Litigation. . . . . . . . . . . . . . . . . . . . . . . . . . . .     8

       4.13    Tax  Returns  and  Payments . . . . . . . . . . . . . . . . . . .     8

       4.14    Employees . . . . . . . . . . . . . . . . . . . . . . . . . . . .     8

       4.15    Registration  Rights  and  Voting  Rights . . . . . . . . . . . .     9

       4.16    Compliance  with  Laws;  Permits. . . . . . . . . . . . . . . . .     9

       4.17    Environmental  and  Safety  Laws. . . . . . . . . . . . . . . . .     9

       4.18    Valid  Offering . . . . . . . . . . . . . . . . . . . . . . . . .    10

       4.19    Full  Disclosure. . . . . . . . . . . . . . . . . . . . . . . . .    10

       4.20    Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . .    10

       4.21    SEC  Reports. . . . . . . . . . . . . . . . . . . . . . . . . . .    10

       4.22    No  Market  Manipulation. . . . . . . . . . . . . . . . . . . . .    11

       4.23    Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    11

       4.24    No  Integrated  Offering. . . . . . . . . . . . . . . . . . . . .    11

<PAGE>
       4.25    Stop  Transfer. . . . . . . . . . . . . . . . . . . . . . . . . .    11

       4.26    Dilution. . . . . . . . . . . . . . . . . . . . . . . . . . . . .    11

5.     REPRESENTATIONS  AND  WARRANTIES  OF  THE  PURCHASERS . . . . . . . . . .    11

       5.1     Requisite  Power  and  Authority. . . . . . . . . . . . . . . . .    11

       5.2     Investment  Representations . . . . . . . . . . . . . . . . . . .    12

       5.3     Purchaser  Bears  Economic  Risk. . . . . . . . . . . . . . . . .    12

       5.4     Acquisition  for  Own  Account. . . . . . . . . . . . . . . . . .    12

       5.5     Purchaser  Can  Protect  Its  Interest. . . . . . . . . . . . . .    12

       5.6     Accredited  Investor. . . . . . . . . . . . . . . . . . . . . . .    12

       5.7     Legends . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    12

       5.8     Security  Interest. . . . . . . . . . . . . . . . . . . . . . . .    13

       5.9     Prospectus. . . . . . . . . . . . . . . . . . . . . . . . . . . .    13

       5.10    Preferred  Stock  Certificate . . . . . . . . . . . . . . . . . .    13

       5.11    Certain  Trading  Restrictions. . . . . . . . . . . . . . . . . .    14

       5.12    Reporting  Requirements . . . . . . . . . . . . . . . . . . . . .    14

6.     COVENANTS  OF  THE  COMPANY . . . . . . . . . . . . . . . . . . . . . . .    14

       6.1     Stop-Orders . . . . . . . . . . . . . . . . . . . . . . . . . . .    14

       6.2     Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    15

       6.3     Market  Regulations . . . . . . . . . . . . . . . . . . . . . . .    15

       6.4     Reporting  Requirements . . . . . . . . . . . . . . . . . . . . .    15

       6.5     Use  of  Funds. . . . . . . . . . . . . . . . . . . . . . . . . .    15

       6.6     Access  to  Facilities. . . . . . . . . . . . . . . . . . . . . .    15

       6.7     Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    16

       6.8     Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . .    16

       6.9     Books  and  Records . . . . . . . . . . . . . . . . . . . . . . .    16

       6.10    Intellectual  Property. . . . . . . . . . . . . . . . . . . . . .    16

       6.11    Confidentiality . . . . . . . . . . . . . . . . . . . . . . . . .    16

       6.12    Corporate  Existence. . . . . . . . . . . . . . . . . . . . . . .    16

       6.13    Reissuance  of  Securities. . . . . . . . . . . . . . . . . . . .    17

       6.14    Opinion . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    17

       6.15    Financial  Covenants. . . . . . . . . . . . . . . . . . . . . . .    17

7.     COVENANTS  OF THE COMPANY AND PURCHASERS REGARDING
       INDEMNIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . .. . . .    18

<PAGE>
       7.1     Company  Indemnification. . . . . . . . . . . . . . . . . . . . .    18

       7.2     Purchaser's  Indemnification. . . . . . . . . . . . . . . . . . .    18

       7.3     Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . .    18

8.     CONVERSION  OF  CONVERTIBLE  PREFERRED  STOCK . . . . . . . . . . . . . .    19

       8.1     Mechanics  of  Conversion . . . . . . . . . . . . . . . . . . . .    19

       8.2     Maximum  Conversion . . . . . . . . . . . . . . . . . . . . . . .    19

       8.3     Optional  Redemption. . . . . . . . . . . . . . . . . . . . . . .    20

9.     REGISTRATION  RIGHTS. . . . . . . . . . . . . . . . . . . . . . . . . . .    21

       9.1     Registration  Rights  Granted . . . . . . . . . . . . . . . . . .    21

       9.2     Registration  Procedures. . . . . . . . . . . . . . . . . . . . .    21

       9.3     Provision  of  Documents. . . . . . . . . . . . . . . . . . . . .    22

       9.4     Non-Registration  Events. . . . . . . . . . . . . . . . . . . . .    23

       9.5     Expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . . .    23

       9.6     Indemnification  and  Contribution. . . . . . . . . . . . . . . .    23

10.    OFFERING  RESTRICTIONS. . . . . . . . . . . . . . . . . . . . . . . . . .    25

11.    SECURITY  INTEREST. . . . . . . . . . . . . . . . . . . . . . . . . . . .    26

12.    MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    26

       12.1    Governing  Law. . . . . . . . . . . . . . . . . . . . . . . . . .    26

       12.2    Survival. . . . . . . . . . . . . . . . . . . . . . . . . . . . .    26

       12.3    Successors  and  Assigns. . . . . . . . . . . . . . . . . . . . .    26

       12.4    Entire  Agreement . . . . . . . . . . . . . . . . . . . . . . . .    26

       12.5    Severability. . . . . . . . . . . . . . . . . . . . . . . . . . .    27

       12.6    Amendment  and  Waiver. . . . . . . . . . . . . . . . . . . . . .    27

       12.7    Delays  or  Omissions . . . . . . . . . . . . . . . . . . . . . .    27

       12.8    Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    27

       12.9    Attorneys'  Fees. . . . . . . . . . . . . . . . . . . . . . . . .    28

       12.10   Titles  and  Subtitles. . . . . . . . . . . . . . . . . . . . . .    28

       12.11   Counterparts. . . . . . . . . . . . . . . . . . . . . . . . . . .    28

       12.12   Broker's  Fees. . . . . . . . . . . . . . . . . . . . . . . . . .    28

       12.13   Construction. . . . . . . . . . . . . . . . . . . . . . . . . . .    28
</TABLE>

<PAGE>
                          IMPLANT SCIENCES CORPORATION
                          SECURITIES PURCHASE AGREEMENT

     THIS SECURITIES PURCHASE AGREEMENT (the "AGREEMENT") is made and entered
into as of October 7th, 2002, by and among IMPLANT SCIENCES CORPORATION, a
Massachusetts corporation (the "COMPANY"), and Laurus Master Fund, Ltd. a Cayman
Islands company (the "PURCHASER").

                                    RECITALS

     WHEREAS, the Company has authorized the sale of Series A 7% Convertible
Preferred Stock, $0.10 par value, (the "PREFERRED STOCK"), for the aggregate
purchase price of $2,500,000, convertible into shares of the Company's common
stock, $0.10 par value per share (the "COMMON STOCK");

     WHEREAS, the Company wishes to issues a warrant (the "WARRANT") to the
Purchaser to purchase shares of the Company's Common Stock in connection with
Purchaser's purchase of the Preferred Stock;

     WHEREAS, Purchaser desires to purchase the Preferred Stock and Warrant on
the terms and conditions set forth herein; and

     WHEREAS, the Company desires to issue and sell the Preferred Stock and
Warrant to the Purchaser on the terms and conditions set forth herein.

                                    AGREEMENT

     NOW, THEREFORE, in consideration of the foregoing recitals and the mutual
promises, representations, warranties and covenants hereinafter set forth and
for other good and valuable consideration, the receipt and sufficiency of which
are hereby acknowledged, the parties hereto agree as follows:

     1.     AGREEMENT TO SELL AND PURCHASE. Pursuant to the terms and conditions
set forth in this Agreement, on the Closing Date (as defined in Section 3), the
Company agrees to sell to the Purchaser, and the Purchaser hereby agrees to
purchase from the Company, Preferred Stock in the amount of $2,500,000,
convertible in accordance with the terms thereof into shares of the Company's
Common Stock. The Preferred Stock purchased on the Closing Date shall be known
as the "OFFERING." The Certificate of Vote of Directors Establishing a Class or
Series of Stock for the Preferred Stock (the "CERTIFICATE OF VOTE OF DIRECTORS")
is annexed hereto as Exhibit A. The Preferred Stock will have a Mandatory
Redemption Date (as defined in the Preferred Stock) eighteen months from the
date of issuance. Collectively, the Preferred Stock and Warrant (as defined in
Section 2) and Common Stock issuable upon conversion of the Preferred Stock and
exercise of the Warrant are referred to as the "SECURITIES."

<PAGE>
     2.     FEES AND WARRANT.

               (a)     The Company will issue and deliver to the Purchaser a
Warrant to purchase 55,000 shares of Common Stock in connection with the
Offering (the "WARRANT") pursuant to Section 1 hereof.  The Warrant must be
delivered on the Closing Date.  A form of Warrant is annexed hereto as Exhibit
B.  All the representations, covenants, warranties, undertakings, and
indemnification, and other rights made or granted to or for the benefit of the
Purchaser by the Company are hereby also made and granted in respect of the
Warrant and shares of the Company's Common Stock issuable upon exercise of the
Warrant (the "WARRANT SHARES").

               (b)     The Company shall reimburse the Purchaser for its
reasonable legal fees for services rendered to the Purchaser in preparation of
this Agreement and the Related Agreements, and expenses in connection with the
Purchaser's due diligence review of the Company and relevant matters.  Amounts
required to be paid hereunder will be paid at the Closing and shall not exceed
$25,000.

               (c)     The Company will pay a cash fee in the amount of eight
percent (8%) of the aggregate gross purchase price to be paid to the Company
from the sale of the Preferred Stock in the Offering (the "FUND MANAGEMENT FEE")
to Laurus Capital Management, L.L.C., a Delaware limited liability company.  The
Fund Management Fee must be paid on the Closing Date.  The aforementioned Fund
Management Fee and legal fees will be payable at the Closing out of funds held
pursuant to a Funds Escrow Agreement to be entered into by the Company,
Purchaser and an Escrow Agent.

     3.     CLOSING, DELIVERY AND PAYMENT.

          3.1     CLOSING.  Subject to the terms and conditions herein, the
closing of the transactions contemplated hereby (the "CLOSING"), which closing
is comprised of Purchaser's purchase of the Preferred Stock in the aggregate
principal amount of $2,500,000, shall take place on the date hereof, at the
offices of Daniel M. Laifer, Esq., 152 West 57th Street, 4th Floor, New York,
New York 10019, or at such other time or place as the Company and Purchaser may
mutually agree (such date is hereinafter referred to as the "CLOSING DATE").

          3.2     DELIVERY.  At the Closing, subject to the terms and conditions
hereof, the Company will deliver to the Purchaser the Certificate of Vote of
Directors  in the form attached as Exhibit A representing the principal amount
of $2,500,000 and a Common Stock Purchase Warrant in the form attached as
Exhibit B in the Purchaser's name representing 55,000 Warrant Shares and the
Purchaser will deliver to the Company $2,500,000, less fees and expenses by
certified funds or wire transfer made payable to the order of the Company,
cancellation of indebtedness or any combination of the foregoing.

     4.     REPRESENTATIONS AND WARRANTIES OF THE COMPANY.

          The Company hereby represents and warrants to the Purchaser as of the
date of this Agreement as set forth below.  As used herein, the term SEC REPORTS
shall mean the Company's (i) Annual Report on Form 10-KSB for the fiscal year

                                      -2-
<PAGE>
ended June 30, 2001 and (ii) Quarterly Reports on Form 10-QSB for the fiscal
quarters ended September 30, 2001, December 31, 2001 and March 31, 2002.

          4.1     ORGANIZATION, GOOD STANDING AND QUALIFICATION.  The Company is
a corporation duly organized, validly existing and in good standing under the
laws of the Commonwealth of Massachusetts.  The Company has all requisite
corporate power and authority to own and operate its properties and assets, to
execute and deliver this Agreement, the Warrant to be issued in connection with
this Agreement, the Funds Escrow Agreement, and all other agreements referred to
herein (collectively, the "RELATED AGREEMENTS"), to issue and sell the Preferred
Stock and the shares of Common Stock issuable upon conversion of the Preferred
Stock (the "CONVERSION SHARES"), to issue and sell the Warrant and the Warrant
Shares, and to carry out the provisions of this Agreement and the Related
Agreements and to carry on its business as presently conducted and as presently
proposed to be conducted.  The Company is duly qualified and is authorized to do
business and is in good standing as a foreign corporation in all jurisdictions
in which the nature of its activities and of its properties (both owned and
leased) makes such qualification necessary, except for those jurisdictions in
which failure to do so would not have a material adverse effect on the Company
or its business.

          4.2     SUBSIDIARIES.  Except as set forth in the SEC Reports, the
Company does not own or control any equity security or other interest of any
other corporation, limited partnership or other business entity.

          4.3     CAPITALIZATION; VOTING RIGHTS.

               (a)     The authorized capital stock of the Company, immediately
prior to the Closing, consists of (i) 20,000,000 shares of Common Stock, par
value $0.10 per share, 6,216,080 shares of which are issued and outstanding as
of August 31, 2002, and (ii) 5,000,000 shares of Preferred Stock, par value
$0.10 per share, none of which are issued and outstanding.

               (b)     Other than (i) the shares reserved for issuance under the
Company's stock option plans; and (ii) shares which may be granted pursuant to
this Agreement and the Related Agreements, there are no outstanding options,
warrants, rights (including conversion or preemptive rights and rights of first
refusal), proxy or stockholder agreements, or arrangements or agreements of any
kind for the purchase or acquisition from the Company of any of its securities,
except as set forth in the SEC Reports.  Neither the offer, issuance or sale of
any of the Preferred Stock or Warrant, or the issuance of any of the Conversion
Shares or Warrant Shares, nor the consummation of any transaction contemplated
hereby will result in a change in the price or number of any securities of the
Company outstanding, under anti-dilution or other similar provisions contained
in or affecting any such securities.

               (c)     All issued and outstanding shares of the Company's Common
Stock (i) have been duly authorized and validly issued and are fully paid and
nonassessable and (ii) were issued in compliance with all applicable state and
federal laws concerning the issuance of securities.

               (d)     The rights, preferences, privileges and restrictions of
the shares of the Common Stock are as stated in the Amended and Restated
Articles of Organization (the "CHARTER").  The Conversion Shares and Warrant

                                      -3-
<PAGE>
Shares have been duly and validly reserved for issuance.  When issued in
compliance with the provisions of this Agreement and the Company's Charter, the
Securities will be validly issued, fully paid and nonassessable, and will be
free of any liens or encumbrances; provided, however, that the Securities may be
subject to restrictions on transfer under state and/or federal securities laws
as set forth herein or as otherwise required by such laws at the time a transfer
is proposed.

               (e)     Except as set forth in the SEC Reports, no stock plan,
stock purchase, stock option or other agreement or understanding between the
Company and any holder of any equity securities or rights to purchase equity
securities provides for acceleration or other changes in the vesting provisions
or other terms of such agreement or understanding as the result of any merger,
consolidated sale of stock or assets, change in control or any other
transaction(s) by the Company, including the transactions contemplated
hereunder.

          4.4     AUTHORIZATION; BINDING OBLIGATIONS.  All corporate action on
the part of the Company, its officers, directors and stockholders necessary for
the authorization of this Agreement and the Related Agreements, the performance
of all obligations of the Company hereunder at each Closing and the
authorization, sale, issuance and delivery of the Securities pursuant hereto and
the Related Agreements has been taken or will be taken prior to the Closing.
The Agreement and the Related Agreements, when executed and delivered, will be
valid and binding obligations of the Company enforceable in accordance with
their terms, except (a) as limited by applicable bankruptcy, insolvency,
reorganization, moratorium or other laws of general application affecting
enforcement of creditors' rights, and (b) general principles of equity that
restrict the availability of equitable remedies.  The sale of the Preferred
Stock and the subsequent conversion of the Preferred Stock into Common Stock are
not and will not be subject to any preemptive rights or rights of first refusal
that have not been properly waived or complied with. The sale of the Warrants
and the subsequent exercise of the Warrants for Common Stock are not and will
not be subject to any preemptive rights or rights of first refusal that have not
been properly waived or complied with.  The Certificate of Vote of Directors and
the Warrants, when executed and delivered in accordance with the terms of this
Agreement, will be valid and binding obligations of the Company, enforceable in
accordance with their respective terms.

          4.5     LIABILITIES.  Except as set forth in the SEC Reports, the
Company has no material liabilities and, to the best of its knowledge, knows of
no material contingent liabilities, except current liabilities incurred in the
ordinary course of business which have not been, either in any individual case
or in the aggregate, materially adverse.

          4.6     AGREEMENTS; ACTION.

               (a)     Except as set forth in the SEC Reports, there are no
agreements, understandings, instruments, contracts, proposed transactions,
judgments, orders, writs or decrees to which the Company is a party or to its
knowledge by which it is bound which may involve (i) obligations (contingent or
otherwise) of, or payments to, the Company in excess of $50,000 (other than
obligations of, or payments to, the Company arising from purchase or sale
agreements entered into in the ordinary course of business), or (ii) the
transfer or license of any patent, copyright, trade secret or other proprietary
right to or from the Company (other than licenses arising from the purchase of

                                      -4-
<PAGE>
"off the shelf" or other standard products), or (iii) provisions restricting the
development, manufacture or distribution of the Company's products or services,
or (iv) indemnification by the Company with respect to infringements of
proprietary rights.

               (b)     Except as set forth in the SEC Reports, the Company has
not (i) declared or paid any dividends, or authorized or made any distribution
upon or with respect to any class or series of its capital stock, (ii) incurred
any indebtedness for money borrowed or any other liabilities individually in
excess of $50,000 or, in the case of indebtedness and/or liabilities
individually less than $50,000, in excess of $100,000 in the aggregate, (iii)
made any loans or advances to any person, other than ordinary advances for
travel expenses, or (iv) sold, exchanged or otherwise disposed of any of its
assets or rights, other than the sale of its inventory in the ordinary course of
business.

               (c)     For the purposes of subsections (a) and (b) above, all
indebtedness, liabilities, agreements, understandings, instruments, contracts
and proposed transactions involving the same person or entity (including persons
or entities the Company has reason to believe are affiliated therewith) shall be
aggregated for the purpose of meeting the individual minimum dollar amounts of
such subsections.

               (d)     The Company has not engaged in the past two years in any
discussion (i) with any representative of any corporation or corporations
regarding the consolidation or merger of the Company with or into any such
corporation or corporations, (ii) with any corporation, partnership, association
or other business entity or any individual regarding the sale, conveyance or
disposition of all or substantially all of the assets of the Company, or a
transaction or series of related transactions in which more than 50% of the
voting power of the Company is disposed of or (iii) regarding any other form of
acquisition, liquidation, dissolution or winding up of the Company.

          4.7     OBLIGATIONS TO RELATED PARTIES.  Except as set forth in the
SEC Reports, there are no obligations of the Company to officers, directors,
stockholders or employees of the Company other than (a) for payment of salary
for services rendered, (b) reimbursement for reasonable expenses incurred on
behalf of the Company and (c) for other standard employee benefits made
generally available to all employees (including stock option agreements
outstanding under any stock option plan approved by the Board of Directors of
the Company).  Except as set forth in the SEC Reports, none of the officers,
directors or stockholders of the Company, or any members of their immediate
families, are indebted to the Company.  Except as set forth in the SEC Reports,
none of the officers, directors or, to the best of the Company's knowledge, key
employees or stockholders of the Company or any members of their immediate
families, are indebted to the Company or have any direct or indirect ownership
interest in any firm or corporation with which the Company is affiliated or with
which the Company has a business relationship, or any firm or corporation which
competes with the Company, other than passive investments in publicly traded
companies (representing less than 1% of such company) which may compete with the
Company.  Except as set forth in the SEC Reports, no officer, director or
stockholder, or any member of their immediate families, is, directly or
indirectly, interested in any material contract with the Company and no
agreements, understandings or proposed transactions are contemplated between the

                                      -5-
<PAGE>
Company and any such person.  Except as set forth in the SEC Reports, the
Company is not a guarantor or indemnitor of any indebtedness of any other
person, firm or corporation.

          4.8     CHANGES.  Except as set forth in the SEC Reports, since March
31, 2002 there has not been:

               (a)     Any change in the assets, liabilities, financial
condition, prospects or operations of the Company, other than changes in the
ordinary course of business, none of which individually or in the aggregate has
had or is reasonably expected to have a material adverse effect on such assets,
liabilities, financial condition, prospects or operations of the Company;

               (b)     Any resignation or termination of any officer, key
employee or group of employees of the Company;

               (c)     Any material change, except in the ordinary course of
business, in the contingent obligations of the Company by way of guaranty,
endorsement, indemnity, warranty or otherwise;

               (d)     Any damage, destruction or loss, whether or not covered
by insurance, materially and adversely affecting the properties, business or
prospects or financial condition of the Company;

               (e)     Any waiver by the Company of a valuable right or of a
material debt owed to it;

               (f)     Any direct or indirect loans made by the Company to any
stockholder, employee, officer or director of the Company, other than advances
made in the ordinary course of business;

               (g)     Any material change in any compensation arrangement or
agreement with any employee, officer, director or stockholder;

               (h)     Any declaration or payment of any dividend or other
distribution of the assets of the Company;

               (i)     Any labor organization activity related to the Company;

               (j)     Any debt, obligation or liability incurred, assumed or
guaranteed by the Company, except those for immaterial amounts and for current
liabilities incurred in the ordinary course of business;

               (k)     Any sale, assignment or transfer of any patents,
trademarks, copyrights, trade secrets or other intangible assets;

               (l)     Any change in any material agreement to which the Company
is a party or by which it is bound which may materially and adversely affect the
business, assets, liabilities, financial condition, operations or prospects of
the Company;

                                      -6-
<PAGE>
               (m)     Any other event or condition of any character that,
either individually or cumulatively, has or may materially and adversely affect
the business, assets, liabilities, financial condition, prospects or operations
of the Company; or

               (n)     Any arrangement or commitment by the Company to do any of
the acts described in subsection (a) through (m) above.

          4.9     TITLE TO PROPERTIES AND ASSETS; LIENS, ETC. Except as set
forth in the SEC Reports, the Company has good and marketable title to its
properties and assets, and good title to its leasehold estates, in each case
subject to no mortgage, pledge, lien, lease, encumbrance or charge, other than
(a) those resulting from taxes which have not yet become delinquent, (b) minor
liens and encumbrances which do not materially detract from the value of the
property subject thereto or materially impair the operations of the Company, and
(c) those that have otherwise arisen in the ordinary course of business.  All
facilities, machinery, equipment, fixtures, vehicles and other properties owned,
leased or used by the Company are in good operating condition and repair and are
reasonably fit and usable for the purposes for which they are being used.  The
Company is in compliance with all material terms of each lease to which it is a
party or is otherwise bound.

          4.10     INTELLECTUAL PROPERTY.

               (a)     The Company owns or possesses sufficient legal rights to
all patents, trademarks, service marks, trade names, copyrights, trade secrets,
licenses, information and other proprietary rights and processes necessary for
its business as now conducted and to the Company's knowledge as presently
proposed to be conducted (the "INTELLECTUAL PROPERTY"), without any known
infringement of the rights of others.  Except as set forth in the SEC Reports,
there are no outstanding options, licenses or agreements of any kind relating to
the foregoing proprietary rights, nor is the Company bound by or a party to any
options, licenses or agreements of any kind with respect to the patents,
trademarks, service marks, trade names, copyrights, trade secrets, licenses,
information and other proprietary rights and processes of any other person or
entity other than such licenses or agreements arising from the purchase of "off
the shelf" or standard products.

               (b)     The Company has not received any communications alleging
that the Company has violated any of the patents, trademarks, service marks,
trade names, copyrights or trade secrets or other proprietary rights of any
other person or entity, nor is the Company aware of any basis therefor.

               (c)     The Company does not believe it is or will be necessary
to utilize any inventions, trade secrets or proprietary information of any of
its employees made prior to their employment by the Company, except for
inventions, trade secrets or proprietary information that have been rightfully
assigned to the Company.

          4.11     COMPLIANCE WITH OTHER INSTRUMENTS.  Except as set forth in
the SEC Reports, the Company is not in violation or default of any term of its
Charter or Bylaws, or of any provision of any mortgage, indenture, contract,
agreement, instrument or contract to which it is party or by which it is bound
or of any judgment, decree, order or writ.  The execution, delivery and

                                      -7-
<PAGE>
performance of and compliance with this Agreement and the Related Agreements,
and the issuance and sale of Securities pursuant hereto, will not, with or
without the passage of time or giving of notice, result in any such material
violation, or be in conflict with or constitute a default under any such term or
provision, or result in the creation of any mortgage, pledge, lien, encumbrance
or charge upon any of the properties or assets of the Company or the suspension,
revocation, impairment, forfeiture or nonrenewal of any permit, license,
authorization or approval applicable to the Company, its business or operations
or any of its assets or properties.

          4.12     LITIGATION.  Except as set forth in the SEC Reports, there is
no action, suit, proceeding or investigation pending or, to the Company's
knowledge, currently threatened against the Company that questions the validity
of this Agreement or the Related Agreements or the right of the Company to enter
into any of such agreements, or to consummate the transactions contemplated
hereby or thereby, or which might result, either individually or in the
aggregate, in any material adverse change in the assets, condition, affairs or
prospects of the Company, financially or otherwise, or any change in the current
equity ownership of the Company, nor is the Company aware that there is any
basis for any of the foregoing. The Company is not a party or subject to the
provisions of any order, writ, injunction, judgment or decree of any court or
government agency or instrumentality.  Except as set forth in the SEC Reports,
there is no action, suit, proceeding or investigation by the Company currently
pending or which the Company intends to initiate.

          4.13     TAX RETURNS AND PAYMENTS.  The Company has timely filed all
tax returns (federal, state and local) required to be filed by it.  All taxes
shown to be due and payable on such returns, any assessments imposed, and to the
Company's knowledge all other taxes due and payable by the Company on or before
the Closing, have been paid or will be paid prior to the time they become
delinquent.  The Company has not been advised (a) that any of its returns,
federal, state or other, have been or are being audited as of the date hereof,
or (b) of any deficiency in assessment or proposed judgment to its federal,
state or other taxes.  The Company has no knowledge of any liability of any tax
to be imposed upon its properties or assets as of the date of this Agreement
that is not adequately provided for.

          4.14     EMPLOYEES.  The Company has no collective bargaining
agreements with any of its employees.  There is no labor union organizing
activity pending or, to the Company's knowledge, threatened with respect to the
Company.  Except as set forth in the SEC Reports, the Company is not a party to
or bound by any currently effective employment contract, deferred compensation
arrangement, bonus plan, incentive plan, profit sharing plan, retirement
agreement or other employee compensation plan or agreement.  To the Company's
knowledge, no employee of the Company, nor any consultant with whom the Company
has contracted, is in violation of any term of any employment contract,
proprietary information agreement or any other agreement relating to the right
of any such individual to be employed by, or to contract with, the Company
because of the nature of the business to be conducted by the Company; and to the
Company's knowledge the continued employment by the Company of its present
employees, and the performance of the Company's contracts with its independent
contractors, will not result in any such violation.  The Company is not aware
that any of its employees is obligated under any contract (including licenses,
covenants or commitments of any nature) or other agreement, or subject to any
judgment, decree or order of any court or administrative agency, that would
interfere with their duties to the Company.  The Company has not received any

                                      -8-
<PAGE>
notice alleging that any such violation has occurred.  Except as set forth in
the SEC Reports, no employee of the Company has been granted the right to
continued employment by the Company or to any material compensation following
termination of employment with the Company.  The Company is not aware that any
officer, key employee or group of employees intends to terminate his, her or
their employment with the Company, nor does the Company have a present intention
to terminate the employment of any officer, key employee or group of employees.

          4.15     REGISTRATION RIGHTS AND VOTING RIGHTS.  The Company is
presently not under any obligation, and has not granted any rights, to register
any of the Company's presently outstanding securities or any of its securities
that may hereafter be issued.  To the Company's knowledge, no stockholder of the
Company has entered into any agreement with respect to the voting of equity
securities of the Company.

          4.16     COMPLIANCE WITH LAWS; PERMITS.  To its knowledge, the Company
is not in violation of any applicable statute, rule, regulation, order or
restriction of any domestic or foreign government or any instrumentality or
agency thereof in respect of the conduct of its business or the ownership of its
properties which violation would materially and adversely affect the business,
assets, liabilities, financial condition, operations or prospects of the
Company.  No governmental orders, permissions, consents, approvals or
authorizations are required to be obtained and no registrations or declarations
are required to be filed in connection with the execution and delivery of this
Agreement and the issuance of any of the Securities, except such as has been
duly and validly obtained or filed, or with respect to any filings that must be
made after the Closing, as will be filed in a timely manner.  The Company has
all franchises, permits, licenses and any similar authority necessary for the
conduct of its business as now being conducted by it, the lack of which could
materially and adversely affect the business, properties, prospects or financial
condition of the Company.

          4.17     ENVIRONMENTAL AND SAFETY LAWS.  The Company is not in
violation of any applicable statute, law or regulation relating to the
environment or occupational health and safety, and to its knowledge, no material
expenditures are or will be required in order to comply with any such existing
statute, law or regulation.  Except as set forth in the SEC Reports, no
Hazardous Materials (as defined below) are used or have been used, stored, or
disposed of by the Company or, to the Company's knowledge, by any other person
or entity on any property owned, leased or used by the Company.  For the
purposes of the preceding sentence, "HAZARDOUS MATERIALS" shall mean (a)
materials which are listed or otherwise defined as "HAZARDOUS" or "TOXIC" under
any applicable local, state, federal and/or foreign laws and regulations that
govern the existence and/or remedy of contamination on property, the protection
of the environment from contamination, the control of hazardous wastes, or other
activities involving hazardous substances, including building materials, or (b)
any petroleum products or nuclear materials.

          4.18     VALID OFFERING.  Assuming the accuracy of the representations
and warranties of the Purchaser contained in this Agreement, the offer, sale and
issuance of the Securities will be exempt from the registration requirements of
the Securities Act of 1933, as amended (the "SECURITIES ACT"), and will have
been registered or qualified (or are exempt from registration and qualification)
under the registration, permit or qualification requirements of all applicable
state securities laws.  Neither the Company nor any agent on its behalf has
solicited or will solicit any offers to sell or has offered to sell or will

                                      -9-
<PAGE>
offer to sell all or any part of the Securities to any person or persons so as
to bring the sale of such Securities by the Company within the registration
provisions of the Securities Act or any state securities laws.

          4.19     FULL DISCLOSURE.  The Company has provided the Purchaser with
all information requested by the Purchaser in connection with its decision to
purchase the Preferred Stock and Warrant, including all information the Company
believes is reasonably necessary to make such investment decision.  Neither this
Agreement, the exhibits and schedules hereto, the Related Agreements nor any
other document delivered by the Company to Purchaser or its attorneys or agents
in connection herewith or therewith or with the transactions contemplated hereby
or thereby, contain any untrue statement of a material fact nor omit to state a
material fact necessary in order to make the statements contained herein or
therein, in light of the circumstances in which they are made, not misleading.
Any financial projections and other estimates provided to the Purchaser by the
Company were based on the Company's experience in the industry and assumptions
of fact and opinion as to future events which the Company, at the date of the
issuance of such projections or estimates, believed to be reasonable.  As of the
date hereof no facts have come to the attention of the Company that would, in
its opinion, require the Company to revise or amplify in any material respect
the assumptions underlying such projections and other estimates or the
conclusions derived therefrom.  Any financial projections are subject to future
events and the Company cannot give any assurance that it will meet its financial
projections.

          4.20     INSURANCE.  The  Company  has  general  commercial,  product
liability,  fire  and  casualty  insurance  policies with coverage customary for
companies  similarly  situated  to  the  Company.

          4.21     SEC  REPORTS.  The  Company  has  filed all proxy statements,
reports and other documents required to be filed by it under the Exchange Act of
1934,  as amended (the "EXCHANGE ACT").  The Company has furnished the Purchaser
with  copies  of the SEC Reports.  Each SEC Report was in substantial compliance
with  the  requirements  of its respective form and none of the SEC Reports, nor
the financial statements (and the notes thereto) included in the SEC Reports, as
of  their respective dates, contained any untrue statement of a material fact or
omitted  to  state a material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made,  not  misleading.

          4.22     NO MARKET MANIPULATION.  The Company has not taken, and will
not take, directly or indirectly, any action designed to, or that might
reasonably be expected to, cause or result in stabilization or manipulation of
the price of the Common Stock of the Company to facilitate the sale or resale of
any of the Securities being offered hereby or affect the price at which any of
the Securities being offered hereby may be issued.

          4.23     LISTING.  The Company's Common Stock is listed for trading on
the American Stock Exchange and satisfies all requirements for the continuation
of such listing.  The Company has not received any notice that its Common Stock
will be delisted from the American Stock Exchange or that the Common Stock does
not meet all requirements for the continuation of such listing.

                                      -10-
<PAGE>
          4.24     NO INTEGRATED OFFERING.  Neither the Company, nor any of its
affiliates, nor any person acting on its or their behalf, has directly or
indirectly made any offers or sales of any security or solicited any offers to
buy any security under circumstances that would cause the offering of the
Securities pursuant to this Agreement to be integrated with prior offerings by
the Company for purposes of the Securities Act which would prevent the Company
from selling the Securities pursuant to Rule 506 under the Securities Act, or
any applicable exchange-related stockholder approval provisions.  Nor will the
Company or any of its affiliates or subsidiaries take any action or steps that
would cause the offering of the Securities to be integrated with other
offerings.

          4.25     STOP TRANSFER.  The Securities are restricted securities as
of the date of this Agreement.  The Company will not issue any stop transfer
order or other order impeding the sale and delivery of any of the Securities at
such time as the Securities are registered for public sale or an exemption from
registration is available, except as required by federal securities laws.

          4.26     DILUTION.  The Company understands the nature of the
Securities being sold hereby and recognizes that they may have a potential
dilutive effect.  The Company specifically acknowledges that its obligation to
issue the Conversion Shares and Warrant Shares is binding upon the Company and
enforceable regardless of the dilution such issuance may have on the ownership
interests of other shareholders of the Company.

     5.     REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE PURCHASER.

          The Purchaser hereby represents and warrants to the Company with
respect to itself or himself as follows (such representations and warranties do
not lessen or obviate the representations and warranties of the Company set
forth in this Agreement):

          5.1     REQUISITE POWER AND AUTHORITY.  Purchaser has all necessary
power and authority under all applicable provisions of law to execute and
deliver this Agreement and the Related Agreements and to carry out their
provisions.  All action on Purchaser's part required for the lawful execution
and delivery of this Agreement and the Related Agreements have been or will be
effectively taken prior to the Closing.  Upon their execution and delivery, this
Agreement and the Related Agreements will be valid and binding obligations of
Purchaser, enforceable in accordance with their terms, except (a) as limited by
applicable bankruptcy, insolvency, reorganization, moratorium or other laws of
general application affecting enforcement of creditors' rights, and (b) as
limited by general principles of equity that restrict the availability of
equitable remedies.

          5.2     INVESTMENT REPRESENTATIONS. Purchaser understands that the
Securities are being offered and sold pursuant to an exemption from registration
contained in the Securities Act based in part upon Purchaser's representations
contained in the Agreement.

          5.3     PURCHASER BEARS ECONOMIC RISK.   Purchaser has substantial
experience in evaluating and investing in private placement transactions of
securities in companies similar to the Company so that it is capable of
evaluating the merits and risks of its investment in the Company and has the
capacity to protect its own interests.  Purchaser must bear the economic risk of

                                      -11-
<PAGE>
this investment until the Securities are registered pursuant to the Securities
Act, or an exemption from registration is available.

          5.4     ACQUISITION FOR OWN ACCOUNT.  Purchaser is acquiring the
Preferred Stock for Purchaser's own account for investment only, and not with a
view towards their distribution.

          5.5     PURCHASER CAN PROTECT ITS INTEREST.   Purchaser represents
that by reason of its, or of its management's, business or financial experience,
Purchaser has the capacity to protect its own interests in connection with the
transactions contemplated in this Agreement, and the Related Agreements.
Further, Purchaser is aware of no publication of any advertisement in connection
with the transactions contemplated in the Agreement.

          5.6     ACCREDITED INVESTOR.   Purchaser represents that it is an
accredited investor within the meaning of Regulation D under the Securities Act.

          5.7     LEGENDS.

               (a)     The Preferred Stock shall bear the following legend until
the Preferred Stock and Conversion Shares are covered by an effective
registration statement filed with the Securities and Exchange Commission (the
"SEC"):

          "THESE SHARES OF PREFERRED STOCK AND THE COMMON STOCK ISSUABLE
          UPON CONVERSION OF THE PREFERRED STOCK HAVE NOT BEEN REGISTERED
          UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR, IF APPLICABLE,
          STATE SECURITIES LAWS. THESE SHARES OF PREFERRED STOCK AND THE
          COMMON STOCK ISSUABLE UPON CONVERSION OF THE PREFERRED STOCK MAY
          NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE
          ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT AS TO THE
          PREFERRED STOCK OR COMMON STOCK ISSUABLE UPON CONVERSION OF
          PREFERRED STOCK UNDER SAID ACT AND APPLICABLE STATE SECURITIES
          LAWS OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO IMPLANT
          SCIENCES CORPORATION THAT SUCH REGISTRATION IS NOT REQUIRED."

               (b)     The Conversion Shares and the Warrant Shares shall bear a
legend which shall be in substantially the following form until such shares are
covered by an effective registration statement filed with the SEC:

          "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
          REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR IF
          APPLICABLE, STATE SECURITIES LAWS. THESE SHARES MAY NOT BE SOLD,

                                      -12-
<PAGE>
          OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN
          EFFECTIVE REGISTRATION STATEMENT UNDER SUCH SECURITIES ACT AND
          APPLICABLE STATE LAWS OR AN OPINION OF COUNSEL REASONABLY
          SATISFACTORY TO IMPLANT SCIENCES CORPORATION THAT SUCH
          REGISTRATION IS NOT REQUIRED."

               (c)     The Warrants shall bear the following legend:

          "THIS WARRANT AND THE COMMON STOCK ISSUABLE UPON EXERCISE OF THIS
          WARRANT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
          AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THIS WARRANT AND THE
          COMMON SHARES ISSUABLE UPON EXERCISE OF THIS WARRANT MAY NOT BE SOLD,
          OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN
          EFFECTIVE REGISTRATION STATEMENT AS TO THIS WARRANT OR THE UNDERLYING
          SHARES OF COMMON STOCK UNDER SAID ACT AND APPLICABLE STATE SECURITIES
          LAWS OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO IMPLANT
          SCIENCES CORPORATION THAT SUCH REGISTRATION IS NOT REQUIRED."

     The Purchaser covenants and agrees with the Company as follows:

          5.8     SECURITY INTEREST.     Purchaser agrees to terminate its
security interest in the assets, as fully described in the Security Agreement
between the Company and Purchaser of even date herewith (the "SECURITY
AGREEMENT"), upon the Company tendering the final payment in satisfaction of the
obligations as defined in the Security Agreement.  Purchaser agrees to join with
the Company in executing termination statements and other instruments pursuant
to the Uniform Commercial Code as enacted and in effect from time to time in the
State of New York in form satisfactory to the Company and in executing such
other documents or instruments as may be required or deemed necessary by the
Company for purposes of terminating the security interest in the collateral.

          5.9     PROSPECTUS.     Purchaser shall furnish copies of the
prospectus in connection with a public sale or disposition of the Common Stock.

          5.10     PREFERRED STOCK CERTIFICATE.     When Purchaser elects to
convert shares of Preferred Stock in accordance with Section 8 below, Purchaser
shall surrender the Preferred Stock Certificate upon receipt of a credit to the
account of the Purchaser's prime broker through the DWAC system (as defined
below), representing the Conversion Shares or upon complete satisfaction of the
Preferred Stock.

                                      -13-
<PAGE>
          5.11     CERTAIN TRADING RESTRICTIONS.     Purchaser agrees that, as
long as it holds any shares of Preferred Stock, it shall not enter into any
Short Sales (as defined herein).  For purposes of this Section 5.11, a "SHORT
SALE" shall mean a sale of Common Stock by Purchaser that would be required to
be marked as a "short sale" by the broker executing the sale pursuant to the
provisions of Rules 10a-1(c) and 10a-1(d)(1) under the Exchange Act if such
rules applied to the sale (whether or not they in fact apply to the sale), and
that is made at a time when immediately after the sale, and giving effect to all
other sales by the Purchaser, there would be no equivalent offsetting long
position in Common Stock held by Purchaser.  For the purpose of determining
under this Section 5.11 whether there is an equivalent offsetting long position
in Common Stock held by Purchaser, only those Conversion Shares that are (i)
issuable upon conversion of the Preferred Stock for which a conversion notice
has been delivered by Purchaser on or prior to a trading day or (ii) issuable as
a result of the delivery by the Company of a Repayment Election Notice, as
defined in the Certificate of Vote of Directors, shall be deemed to be held long
by Purchaser on such trading day.

          5.12     REPORTING  REQUIREMENTS.     Purchaser  will timely file with
the  SEC  all  reports  required  to  be  filed  pursuant  to  the Exchange Act.

     6.     COVENANTS OF THE COMPANY.   The Company covenants and agrees with
the Purchaser as follows:

          6.1     STOP-ORDERS. The Company will advise the Purchaser, promptly
after it receives notice of issuance by the SEC, any state securities commission
or any other regulatory authority of any stop order or of any order preventing
or suspending any offering of any securities of the Company, or of the
suspension of the qualification of the Common Stock of the Company for offering
or sale in any jurisdiction, or the initiation of any proceeding for any such
purpose.

          6.2     LISTING.   The Company shall promptly secure the listing of
the shares of Common Stock issuable upon conversion of the Preferred Stock and
upon the exercise of the Warrant on the Pink Sheets, the NASD OTC Bulletin
Board, NASDAQ SmallCap Market, NASDAQ National Market, American Stock Exchange
or New York Stock Exchange (the "PRINCIPAL MARKET") upon which shares of Common
Stock are then listed (subject to official notice of issuance) and shall
maintain such listing so long as any other shares of Common Stock shall be so
listed.  The Company will maintain the listing of its Common Stock on a
Principal Market, and will comply in all material respects with the Company's
reporting, filing and other obligations under the bylaws or rules of the
National Association of Securities Dealers ("NASD") and such exchanges, as
applicable.  The Company will provide the Purchaser copies of all notices it
receives notifying the Company of the threatened and actual delisting of the
Common Stock from any Principal Market.

          6.3     MARKET REGULATIONS.   The Company shall notify the SEC, NASD
and applicable state authorities, in accordance with their requirements, of the
transactions contemplated by this Agreement, and shall take all other necessary
action and proceedings as may be required and permitted by applicable law, rule
and regulation, for the legal and valid issuance of the Securities to Purchaser
and promptly provide copies thereof to Purchaser.

                                      -14-
<PAGE>
          6.4     REPORTING REQUIREMENTS.   The Company will timely file with
the SEC all reports required to be filed pursuant to the Exchange Act and
refrain from terminating its status as an issuer required by the Exchange Act to
file reports thereunder even if the Exchange Act or the rules or regulations
thereunder would permit such termination.  In addition, within 20 days after the
end of each calendar month, the Company will provide to the Purchaser a monthly
cash flow statement, balance sheet and income statement for the immediately
preceding month.

          6.5     USE OF FUNDS.   The Company agrees that it will use the
proceeds of the sale of the Preferred Stock and Warrant for general corporate
purposes only, in the ordinary course of its business and consistent with past
practice and, without limiting the generality of the foregoing, shall not use
such proceeds to make a loan to any employee, officer, director or stockholder
of the Company, to repay any loan or other obligation of the Company or to
repurchase or pay a dividend on shares of Common Stock or other securities of
the Company (in any such case, regardless of whether such loan or payment was
authorized by the Company's Board of Directors prior to the date hereof), other
than any such repurchase or payment explicitly required, permitted or
contemplated by the terms of this Agreement or the other Related Agreements.
The Company agrees that it will use $1,000,000 of the proceeds of the Offering
for the purpose of purchasing an Axcelis Ion Implanter (the "EQUIPMENT").  If,
within three (3) months from the Closing Date, the Company is unable to purchase
the Equipment for $1,000,000 or less, the Company shall either: (i) repay the
$1,000,000 or (ii) use the $1,000,000 for general corporate purposes, upon the
consent of Purchaser, which consent shall not be unreasonably withheld.

          6.6     ACCESS TO FACILITIES.   The Company will permit any
representatives designated by the Purchaser (or any transferee of the
Purchaser), so long as such person holds any Securities upon reasonable notice
and during normal business hours, at such person's expense and accompanied by a
representative of the Company, to (a) visit and inspect any of the properties of
the Company, (b) examine the corporate and financial records of the Company
(unless such examination is not permitted by federal, state or local law or by
contract) and make copies thereof or extracts therefrom and (c) discuss the
affairs, finances and accounts of any such corporations with the directors,
officers and independent accountants of the Company.

          6.7     TAXES.   The Company will promptly pay and discharge, or cause
to be paid and discharged, when due and payable, all lawful taxes, assessments
and governmental charges or levies imposed upon the income, profits, property or
business of the Company; provided, however, that any such tax, assessment,
charge or levy need not be paid if the validity thereof shall currently be
contested in good faith by appropriate proceedings and if the Company shall have
set aside on its books adequate reserves with respect thereto, and provided,
further, that the Company will pay all such taxes, assessments, charges or
levies forthwith upon the commencement of proceedings to foreclose any lien
which may have attached as security therefor.

          6.8     INSURANCE.   The Company will keep its assets which are of an
insurable character insured by financially sound and reputable insurers against
loss or damage by fire, explosion and other risks customarily insured against by
companies in the Company's line of business, in amounts sufficient to prevent
the Company from becoming a co-insurer and not in any event less than 100% of
the insurable value of the property insured; and the Company will maintain, with
financially sound and reputable insurers, insurance against other hazards and

                                      -15-
<PAGE>
risks and liability to persons and property to the extent and in the manner
customary for companies in similar businesses similarly situated and to the
extent available on commercially reasonable terms.

          6.9     BOOKS AND RECORDS.   The Company will keep true records and
books of account in which full, true and correct entries will be made of all
dealings or transactions in relation to its business and affairs in accordance
with generally accepted accounting principles applied on a consistent basis.

          6.10     INTELLECTUAL PROPERTY.   The Company shall maintain in full
force and effect its corporate existence, rights and franchises and all licenses
and other rights to use Intellectual Property owned or possessed by it and
reasonably deemed to be necessary to the conduct of its business.

          6.11     CONFIDENTIALITY.  The Company agrees that it will not
disclose, and will not include in any public announcement, the name of the
Purchaser, unless expressly agreed to by the Purchaser or unless and until such
disclosure is required by law or applicable regulation, and then only to the
extent of such requirement.

          6.12     CORPORATE EXISTENCE.  The Company shall maintain its
corporate existence, and will not liquidate, dissolve or effect a
recapitalization, reclassification or reorganization in any form of transaction.
In addition, the Company shall not sell all or substantially all of the
Company's assets, except in the event of a merger or consolidation or sale or
transfer of all or substantially all of the Company's assets, where the
surviving or successor entity in such transaction (i) assumes the Company's
obligations hereunder and the Related Agreements and (ii) is a publicly traded
company whose common stock is quoted or listed on a Principal Market.

          6.13     REISSUANCE OF SECURITIES.  The Company agrees to reissue
certificates representing the Securities without the legends set forth in
Section 5.7 above at such time as (a) the holder thereof is permitted to dispose
of such Securities pursuant to Rule 144(k) under the Securities Act, or (b) upon
resale subject to an effective registration statement after such Securities are
registered under the Securities Act.  The Company agrees to cooperate with the
Purchaser in connection with all resales pursuant to Rule 144(d) and Rule 144(k)
and provide legal opinions necessary to allow such resales provided the Company
and its counsel receive reasonably requested representations from the selling
Purchaser and broker, if any.

          6.14     OPINION. On the Closing Date, the Company will deliver to the
Purchaser an opinion acceptable to the Purchaser from the Company's legal
counsel in the form annexed hereto as Exhibit C.  The Company will provide, at
the Company's expense, such other legal opinions in the future as are reasonably
necessary for the conversion of the Preferred Stock and exercise of the
Warrants.

          6.15     FINANCIAL COVENANTS.  Definitions for Financial Condition
Covenants:

               (a)     "Cash Burn" shall mean for any period EBITDA less capital
expenditures plus financing of capital expenditures.

                                      -16-
<PAGE>
               (b)     "Current Liabilities" shall mean at the date of
determination, all liabilities of the Company which, in accordance with GAAP,
would be classified on a balance sheet of the Company as current liabilities.

               (c)     "EBIT" shall mean for any period the revenues of the
Company for such period from continuing operations, minus associated costs
(generally excluding interest expense, income taxes, and non-cash items such as
stock based compensation), determined in each case in accordance with GAAP.

               (d)     "EBITDA" shall mean for any period the revenues of the
Company for such period from continuing operations, minus associated costs
(generally excluding interest expense, income taxes, unallocated depreciation
and amortization and non-cash items such as stock based compensation),
determined in each case in accordance with GAAP.

               (e)     "Net Worth" shall mean as of the date of determination,
all items which in conformity with GAAP would be included under shareholders'
equity on a balance sheet of the Company, excluding non-cash items such as stock
based compensation.

               (f)     "Tangible Net Worth" shall mean as of the date of
determination, Net Worth after deducting intangible assets including goodwill,
patents, trademarks, copyrights, prepaid assets, and other assets less the
liability relating to the warrants issued between December 18, 2001 and January
3, 2002 to purchase 70,900 shares of Common Stock as described in the 10-QSB for
the period ending March 31, 2002, which at the time of filing equaled $638,000.

               (g)     "Quick Ratio" shall mean marketable securities,
short-term investments and accounts receivable divided by Current Liabilities.

     The Company hereby agrees that so long as the Preferred Stock remains
outstanding or any other amount is owing to the Purchaser hereunder, the Company
shall not:

               (a)     Maintenance of Quick Ratio.  Permit the Quick Ratio to be
                       --------------------------
less than 0.65.

               (b)     Maintenance of Tangible Net Worth.  Permit Tangible Net
                       ---------------------------------
Worth at any time during any period to be less than $1.7 million and $1.4
million if the Company does not purchase the Equipment.

               (c)     Maintenance of Cash Burn limits.  Permit for any
                       -------------------------------
consecutive three month period the Cash Burn to be greater than $500,000 with
the exception of a step-up to $650,000 for any three such measurement periods.

               (d)     Maintenance of EBIT.  Permit EBIT for the year ending
                       -------------------
June 2003 to be less than negative $2.4 million and thereafter to be negative
for any fiscal quarter.

                                      -17-
<PAGE>
     7.     COVENANTS  OF  THE  COMPANY AND PURCHASER REGARDING INDEMNIFICATION.

          7.1     COMPANY INDEMNIFICATION.  The Company agrees to indemnify,
hold harmless, reimburse and defend Purchaser, each of Purchaser's officers,
directors, agents, affiliates, control persons, and principal shareholders,
against any claim, cost, expense, liability, obligation, loss or damage
(including reasonable legal fees) of any nature, incurred by or imposed upon the
Purchaser which results, arises out of or is based upon (i) any
misrepresentation by Company or breach of any warranty by Company in this
Agreement or in any exhibits or schedules attached hereto or any Related
Agreement, or (ii) any breach or default in performance by Company of any
covenant or undertaking to be performed by Company hereunder, or any other
agreement entered into by the Company and Purchaser relating hereto.

          7.2     PURCHASER'S INDEMNIFICATION.  Purchaser agrees to indemnify,
hold harmless, reimburse and defend the Company and each of the Company's
officers, directors, agents, affiliates, control persons and principal
shareholders, at all times against any claim, cost, expense, liability,
obligation, loss or damage (including reasonable legal fees) of any nature,
incurred by or imposed upon the Company which results, arises out of or is based
upon (i) any misrepresentation by Purchaser or breach of any warranty by
Purchaser in this Agreement or in any exhibits or schedules attached hereto or
any Related Agreement; or (ii) any breach or default in performance by Purchaser
of any covenant or undertaking to be performed by Purchaser hereunder, or any
other agreement entered into by the Company and Purchaser relating hereto.

          7.3     PROCEDURES.  The procedures and limitations set forth in
Section 9.6 shall apply to the indemnifications set forth in Sections 7.1 and
7.2 above.

     8.     CONVERSION OF PREFERRED STOCK.

          8.1     MECHANICS OF CONVERSION.

               (a)     Provided the Purchaser has notified the Company of the
Purchaser's intention to sell the Conversion Shares and the Conversion Shares
are included in an effective registration statement or are otherwise exempt from
registration when sold:  (i) Upon the conversion of the Preferred Stock or part
thereof, the Company shall, at its own cost and expense, take all necessary
action (including the issuance of an opinion of counsel) to assure that the
Company's transfer agent shall issue the Conversion Shares in the name of the
Purchaser (or its nominee) or such other persons as designated by the Purchaser
in accordance with Section 8.1(b) hereof and in such denominations to be
specified representing the number of Conversion Shares issuable upon such
conversion; and (ii) the Company warrants that no instructions other than these
instructions have been or will be given to the transfer agent of the Company's
Common Stock and that after the Effective Date (as hereinafter defined) the
Conversion Shares issued will be freely transferable subject to the prospectus
delivery requirements of the Securities Act and the provisions of this
Agreement, and will not contain a legend restricting the resale or
transferability of the Conversion Shares.

               (b)     Purchaser will give notice of its decision to exercise
its right to convert the Preferred Stock or part thereof by telecopying or
otherwise delivering an executed and completed notice of the number of shares to

                                      -18-
<PAGE>
be converted to the Company (the "NOTICE OF CONVERSION"). The Purchaser will not
be required to surrender the Preferred Stock Certificate until the Purchaser
receives a credit to the account of the Purchaser's prime broker through the
DWAC system (as defined below), representing the Conversion Shares or until the
Preferred Stock has been fully satisfied.  Each date on which a Notice of
Conversion is telecopied or delivered to the Company in accordance with the
provisions hereof shall be deemed a "CONVERSION DATE."  The Company will cause
the transfer agent to transmit the Conversion Shares (and a certificate
representing the balance of the Preferred Stock not so converted, if requested
by Purchaser) to the Purchaser by crediting the account of the Purchaser's prime
broker with the Depository Trust Company ("DTC") through its Deposit Withdrawal
Agent Commission ("DWAC") system within three (3) business days after receipt by
the Company of the Notice of Conversion (the "DELIVERY DATE").

               (c)     The Company understands that a delay in the delivery of
the Conversion Shares in the form required pursuant to Section 8 hereof beyond
the Delivery Date could result in economic loss to the Purchaser.  In the event
that the Company fails to direct its transfer agent to deliver the Conversion
Shares to the Purchaser via the DWAC system within the time frame set forth in
Section 8.1(b) above and the Conversion Shares are not delivered to the
Purchaser by the Delivery Date, as compensation to the Purchaser for such loss,
the Company agrees to pay late payments to the Purchaser for late issuance of
the Conversion Shares in the form required pursuant to Section 8 hereof upon
conversion of the Preferred Stock in the amount equal to the greater of (i) $500
per business day after the Delivery Date or (ii) the Purchaser's actual damages
from such delayed delivery. The Company shall pay any payments incurred under
this Section in immediately available funds upon demand and, in the case of
actual damages, accompanied by reasonable documentation of the amount of such
damages.  Such documentation shall show the number of shares of Common Stock the
Purchaser is forced to purchase (in an open market transaction) which the
Purchaser anticipated receiving upon such conversion, and shall be calculated as
the amount by which (A) the Purchaser's total purchase price (including
customary brokerage commissions, if any) for the shares of Common Stock so
purchased exceeds (B) the aggregate Stated Value (as defined in the Certificate
of Vote of Directors) and/or dividend amount of the Preferred Stock, for which
such Conversion Notice was not timely honored.

               (d)     Nothing contained herein or in any document referred to
herein or delivered in connection herewith shall be deemed to establish or
require the payment of a rate of interest or other charges in excess of the
maximum permitted by applicable law.  In the event that the rate of interest or
dividends required to be paid or other charges hereunder exceed the maximum
amount permitted by such law, any payments in excess of such maximum shall be
credited against amounts owed by the Company to a Purchaser and thus refunded to
the Company.

          8.2     MAXIMUM CONVERSION.  The Purchaser shall not be entitled to
convert on a Conversion Date that amount of the Preferred Stock in connection
with that number of shares of Common Stock which would be in excess of the sum
of (i) the number of shares of Common Stock beneficially owned by the Purchaser
on a Conversion Date, and (ii) the number of shares of Common Stock issuable
upon the conversion of the Preferred Stock with respect to which the
determination of this proviso is being made on a Conversion Date, which would

                                      -19-
<PAGE>
result in beneficial ownership by the Purchaser of more than 4.99% of the
outstanding shares of Common Stock of the Company on such Conversion Date.
Subject to the foregoing, a Purchaser shall not be limited to aggregate
conversions of only 4.99%.  A Purchaser may void the conversion limitation
described in this Section 8.2 upon 75 days prior notice to the Company. Upon an
Event of Default under the Preferred Stock, the conversion limitation in this
Section 8.2 shall automatically become null and void.  Notwithstanding the
foregoing, if the Company has elected to make a payment of a Monthly Amount (as
defined in the Certificate of Vote of Directors) in shares of Common Stock and
such issuance would cause Purchaser's beneficial ownership to exceed 4.99%, then
Purchaser shall be required to sell that number of shares of Common Stock that
it beneficially owns in order to permit the Company to make a payment of a
Monthly Amount in shares of Common Stock.  Beneficial ownership shall be
determined in accordance with Section 13(d) of the Exchange Act and Regulation
13d-3 thereunder.

          8.3     OPTIONAL REDEMPTION.  The Company will have the option of
redeeming any outstanding Stated Value of the Preferred Stock ("OPTIONAL
REDEMPTION") by paying to the Purchaser the greater of (i) 130% of such amount
or (ii) a fraction, of which the numerator is the amount of the Preferred Stock
being redeemed and of which the denominator is the Fixed Conversion Price, as
defined in Section 6(b) of the Certificate of Vote of Directors, together with
accrued but unpaid dividends thereon and any and all other sums due, accrued or
payable to the Purchaser arising under this Agreement, Certificate of Vote of
Directors or any other document delivered herewith ("REDEMPTION AMOUNT")
outstanding on the day notice of redemption ("NOTICE OF REDEMPTION") is
delivered to a Purchaser ("REDEMPTION DATE").  A Notice of Redemption may not be
given in connection with any portion of Preferred Stock for which a Notice of
Conversion has been given by the Purchaser at any time before receipt of a
Notice of Redemption or given pursuant to the following sentence.  The
Redemption Amount must be paid in immediately available funds to the Purchaser
no later than the seventh (7th) business day after the Redemption Date
("OPTIONAL REDEMPTION PAYMENT DATE").  In the event the Company fails to pay the
Redemption Amount by the Optional Redemption Payment Date, then the Redemption
Notice will be null and void.  A Notice of Redemption may be given by the
Company, provided no Event of Default as described in the Certificate of Vote of
Directors shall have occurred or be continuing.

     9.     REGISTRATION RIGHTS.

          9.1     REGISTRATION RIGHTS GRANTED.  The Company hereby grants the
following registration rights to holders of the securities purchased hereby.

               (a)     The Company shall use its reasonable commercial efforts
to file a Form S-3 registration statement (or such other form that it is
eligible to use) in order to register the Conversion Shares and Preferred Shares
(the "REGISTRABLE SECURITIES") for resale and distribution under the Securities
Act with the SEC by November 12, 2002 (the "FILING DATE"), and use its
reasonable commercial efforts to cause such registration statement to be
declared effective within 90 days of the Filing Date (the "EFFECTIVE DATE").
The Company will register 750,000 shares of Common Stock in the aforedescribed
registration statement.  The Registrable Securities shall be reserved and set
aside exclusively for the benefit of the Purchaser and the holders of the
Warrant, as the case may be, and not issued, employed or reserved for anyone

                                      -20-
<PAGE>
other than the Purchaser and the holders of the Warrant.  If the closing price
of the Common Stock is less than $3.00 per share for five (5) consecutive
trading days, then such registration statement will be promptly amended or
additional registration statements will be promptly filed by the Company as
necessary to register additional shares of Common Stock of the Company to allow
the public resale of all Common Stock included in and issuable by virtue of the
Registrable Securities.  No securities of the Company other than the Registrable
Securities will be included in the registration statement described in this
Section 9.1(a).

          9.2     REGISTRATION PROCEDURES. If and whenever the Company is
required by the provisions hereof to effect the registration of any shares of
Registrable Securities under the Securities Act, the Company will, as
expeditiously as possible:

               (a)     prepare and file with the SEC a registration statement
with respect to such securities and use its best efforts to cause such
registration statement to become and remain effective for the period of the
distribution contemplated thereby (determined as herein provided), and promptly
provide to the holders of Registrable Securities copies of all filings and SEC
letters of comment;

               (b)     prepare and file with the SEC such amendments and
supplements to such registration statement and the prospectus used in connection
therewith as may be necessary to keep such registration statement effective
until the later of: (i) six months after the latest exercise period of the
Warrants; or (ii) four years after the Closing Date, and comply with the
provisions of the Securities Act with respect to the disposition of all of the
Registrable Securities covered by such registration statement in accordance with
the Seller's intended method of disposition set forth in such registration
statement for such period;

               (c)     furnish to the Seller, and to each underwriter if any,
such number of copies of the registration statement and the prospectus included
therein (including each preliminary prospectus) as such persons reasonably may
request to facilitate the public sale or their disposition of the securities
covered by such registration statement;

               (d)     use its best efforts to register or qualify the Seller's
Registrable Securities covered by such registration statement under the
securities or "blue sky" laws of such jurisdictions as the Seller and in the
case of an underwritten public offering, the managing underwriter shall
reasonably request, provided, however, that the Company shall not for any such
purpose be required to qualify generally to transact business as a foreign
corporation in any jurisdiction where it is not so qualified or to consent to
general service of process in any such jurisdiction;

               (e)     list the Registrable Securities covered by such
registration statement with any securities exchange on which the Common Stock of
the Company is then listed;

               (f)     immediately notify the Seller and each underwriter under
such registration statement at any time when a prospectus relating thereto is
required to be delivered under the Securities Act, of the happening of any event
of which the Company has knowledge as a result of which the prospectus contained
in such registration statement, as then in effect, includes an untrue statement

                                      -21-
<PAGE>
of a material fact or omits to state a material fact required to be stated
therein or necessary to make the statements therein not misleading in light of
the circumstances then existing; and

               (g)     make available for inspection by the Seller, any
underwriter participating in any distribution pursuant to such registration
statement, and any attorney, accountant or other agent retained by the Seller or
underwriter, all publicly available, non-confidential financial and other
records, pertinent corporate documents and properties of the Company, and cause
the Company's officers, directors and employees to supply all publicly
available, non-confidential information reasonably requested by the seller,
underwriter, attorney, accountant or agent in connection with such registration
statement.

          9.3     PROVISION OF DOCUMENTS.  In connection with each registration
hereunder, the Purchaser will furnish to the Company in writing such information
and representation letters with respect to itself and the proposed distribution
by it as reasonably shall be necessary in order to assure compliance with
federal and applicable state securities laws.

          9.4     NON-REGISTRATION EVENTS.  If (i) the registration statement on
Form S-3 or such other form as described in Section 9.1(a) is not filed on or
before the Filing Date or not declared effective on or before the sooner of the
Effective Date, or within three business days of receipt by the Company of a
communication from the SEC that the registration statement described in Section
9.1(a) will not be reviewed, or (iii) if the registration statement described in
Section 9.1(a) is filed and declared effective but shall thereafter cease to be
effective (without being succeeded immediately by an additional registration
statement filed and declared effective) for a period of time which shall exceed
30 days in the aggregate per year but not more than 20 consecutive calendar days
(defined as a period of 365 days commencing on the date the Registration
Statement is declared effective) (each such event referred to in this Section
9.4 is referred to herein as a "NON-REGISTRATION EVENT"), then, for so long as
such Non-Registration Event shall continue, the Company shall pay in cash as
Liquidated Damages to each holder of any Registrable Securities an amount equal
to one percent (1%) per month or part thereof for the first month and two
percent (2%) per month or part thereof thereafter during the pendency of such
Non-Registration Event of the Stated Value of the Preferred Stock issued in
connection with the Offering, whether or not converted, then owned of record by
such holder or issuable as of or subsequent to the occurrence of such
Non-Registration Event.  Payments to be made pursuant to this Section shall be
due and payable immediately upon demand in immediately available funds.  It
shall be deemed a Non-Registration Event to the extent that all the Common Stock
included in the Registrable Securities and underlying the Securities is not
included in an effective registration statement as of and after the Effective
Date at the conversion prices in effect from and after the Effective Date.

          9.5     EXPENSES.  All expenses incurred by the Company in complying
with Section 9, including, without limitation, all registration and filing fees,
printing expenses, fees and disbursements of counsel and independent public
accountants for the Company, fees and expenses (including reasonable counsel
fees) incurred in connection with complying with state securities or "blue sky"
laws, fees of the NASD, transfer taxes, fees of transfer agents and registrars,
fees of, and up to $2,500 in disbursements incurred by, one counsel for the
Seller, and costs of insurance are called "REGISTRATION EXPENSES". All
underwriting discounts and selling commissions applicable to the sale of

                                      -22-
<PAGE>
Registrable Securities, including any fees and disbursements of any special
counsel to the Seller beyond those included in Registration Expenses, are called
"SELLING EXPENSES."

               The Company will pay all Registration Expenses in connection with
the registration statement under Section 9.  All Selling Expenses in connection
with each registration statement under Section 9 shall be borne by the Seller
and may be apportioned among the Sellers in proportion to the number of shares
sold by the Seller relative to the number of shares sold under such registration
statement or as all Sellers thereunder may agree.

          9.6     INDEMNIFICATION AND CONTRIBUTION.

               (a)     In the event of a registration of any Registrable
Securities under the Securities Act pursuant to Section 9, the Company will
indemnify and hold harmless each Seller, each officer of each Seller, each
director of each Seller, each underwriter of such Registrable Securities
thereunder and each other person, if any, who controls any such Seller or
underwriter within the meaning of the Securities Act, against any losses,
claims, damages or liabilities, joint or several, to which the Seller, or such
underwriter or controlling person may become subject under the Securities Act or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect thereof) arise out of or are based upon any untrue statement or alleged
untrue statement of any material fact contained in any registration statement
under which such Registrable Securities was registered under the Securities Act
pursuant to Section 9, any preliminary prospectus or final prospectus contained
therein, or any amendment or supplement thereof, or arise out of or are based
upon the omission or alleged omission to state therein a material fact required
to be stated therein or necessary to make the statements therein not misleading,
and will reimburse the Seller, each such underwriter and each such controlling
person for any legal or other expenses reasonably incurred by them in connection
with investigating or defending any such loss, claim, damage, liability or
action; provided, however, that the Company will not be liable in any such case
if and to the extent that any such loss, claim, damage or liability arises out
of or is based upon an untrue statement or alleged untrue statement or omission
or alleged omission so made in conformity with information furnished by any such
Seller, the underwriter or any such controlling person in writing specifically
for use in such registration statement or prospectus.

               (b)     In the event of a registration of any of the Registrable
Securities under the Securities Act pursuant to Section 9, the Seller will
indemnify and hold harmless the Company, and each person, if any, who controls
the Company within the meaning of the Securities Act, each officer of the
Company who signs the registration statement and each director of the Company,
against all losses, claims, damages or liabilities, joint or several, to which
the Company or such officer or director may become subject under the Securities
Act or otherwise, insofar as such losses, claims, damages or liabilities (or
actions in respect thereof) arise out of or are based upon any untrue statement
or alleged untrue statement of any material fact contained in the registration
statement under which such Registrable Securities were registered under the
Securities Act pursuant to Section 9, any preliminary prospectus or final
prospectus contained therein, or any amendment or supplement thereof, or arise
out of or are based upon the omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, and will reimburse the Company and each such officer or
director for any legal or other expenses reasonably incurred by them in

                                      -23-
<PAGE>
connection with investigating or defending any such loss, claim, damage,
liability or action, provided, however, that the Seller will be liable hereunder
in any such case if and only to the extent that any such loss, claim, damage or
liability arises out of or is based upon an untrue statement or alleged untrue
statement or omission or alleged omission made in reliance upon and in
conformity with information pertaining to such Seller, as such, furnished in
writing to the Company by such Seller specifically for use in such registration
statement or prospectus, and provided, further, however, that the liability of
the Seller hereunder shall be limited to the proportion of any such loss, claim,
damage, liability or expense which is equal to the proportion that the public
offering price of the Registrable Securities sold by the Seller under such
registration statement bears to the total public offering price of all
securities sold thereunder, but not in any event to exceed the net proceeds
received by the Seller from the sale of Registrable Securities covered by such
registration statement.

               (c)     Promptly after receipt by an indemnified party hereunder
of notice of the commencement of any action, such indemnified party shall, if a
claim in respect thereof is to be made against the indemnifying party hereunder,
notify the indemnifying party in writing thereof, but the omission so to notify
the indemnifying party shall not relieve it from any liability which it may have
to such indemnified party other than under this Section 9.6(c) and shall only
relieve it from any liability which it may have to such indemnified party under
this Section 9.6(c) if and to the extent the indemnifying party is prejudiced by
such omission. In case any such action shall be brought against any indemnified
party and it shall notify the indemnifying party of the commencement thereof,
the indemnifying party shall be entitled to participate in and, to the extent it
shall wish, to assume and undertake the defense thereof with counsel reasonably
satisfactory to such indemnified party, and, after notice from the indemnifying
party to such indemnified party of its election so to assume and undertake the
defense thereof, the indemnifying party shall not be liable to such indemnified
party under this Section 9.6(c) for any legal expenses subsequently incurred by
such indemnified party in connection with the defense thereof other than
reasonable costs of investigation and of liaison with counsel so selected,
provided, however, that, if the defendants in any such action include both the
indemnified party and the indemnifying party and the indemnified party shall
have reasonably concluded that there may be reasonable defenses available to it
which are different from or additional to those available to the indemnifying
party or if the interests of the indemnified party reasonably may be deemed to
conflict with the interests of the indemnifying party, the indemnified parties
shall have the right to select one separate counsel and to assume such legal
defenses and otherwise to participate in the defense of such action, with the
reasonable expenses and fees of such separate counsel and other expenses related
to such participation to be reimbursed by the indemnifying party as incurred.

               (d)     In order to provide for just and equitable contribution
in the event of joint liability under the Securities Act in any case in which
either (i) the Seller, or any controlling person of the Seller, makes a claim
for indemnification pursuant to this Section 9.6 but it is judicially determined
(by the entry of a final judgment or decree by a court of competent jurisdiction
and the expiration of time to appeal or the denial of the last right of appeal)
that such indemnification may not be enforced in such case notwithstanding the
fact that this Section 9.6 provides for indemnification in such case, or (ii)
contribution under the Securities Act may be required on the part of the Seller
or controlling person of the Seller in circumstances for which indemnification
is provided under this Section 9.6; then, and in each such case, the Company and

                                      -24-
<PAGE>
the Seller will contribute to the aggregate losses, claims, damages or
liabilities to which they may be subject (after contribution from others) in
such proportion so that the Seller is responsible only for the portion
represented by the percentage that the public offering price of its securities
offered by the registration statement bears to the public offering price of all
securities offered by such registration statement, provided, however, that, in
any such case, (A) the Seller will not be required to contribute any amount in
excess of the public offering price of all such securities offered by it
pursuant to such registration statement; and (B) no person or entity guilty of
fraudulent misrepresentation (within the meaning of Section 10(f) of the
Securities Act) will be entitled to contribution from any person or entity who
was not guilty of such fraudulent misrepresentation.

     10.     OFFERING RESTRICTIONS.   Except as previously disclosed in the SEC
Reports or stock or stock options granted to employees or directors of the
Company; or equity or debt issued in connection with an acquisition of a
business or assets by the Company; or the issuance by the Company of stock in
connection with the establishment of a joint venture partnership or licensing
arrangement (these exceptions hereinafter referred to as the "EXCEPTED
ISSUANCES"), the Company will not issue any securities with a variable/floating
conversion feature which are or could be (by conversion or registration)
free-trading securities prior to the repayment in full or conversion in full of
the Preferred Stock.

     11.     SECURITY INTEREST.  As a condition of Closing, the Company will
grant to the Purchaser a security interest in its assets pursuant to a Security
Agreement.  The Company will also execute all such documents reasonably
necessary to memorialize and further protect the security interest described
above.

     12.     MISCELLANEOUS.

          12.1     GOVERNING LAW. This Agreement shall be governed by and
construed in accordance with the laws of the State of New York, without regard
to principles of conflicts of laws.  Any action brought by either party against
the other concerning the transactions contemplated by this Agreement shall be
brought only in the state courts of New York or in the federal courts located in
the state of New York; provided, however that the Purchaser may choose to waive
this provision and bring an action outside the state of New York.  Both parties
and the individuals executing this Agreement and other agreements on behalf of
the Company agree to submit to the jurisdiction of such courts and waive trial
by jury.  The prevailing party shall be entitled to recover from the other party
its reasonable attorney's fees and costs.  In the event that any provision of
this Agreement or any other agreement delivered in connection herewith is
invalid or unenforceable under any applicable statute or rule of law, then such
provision shall be deemed inoperative to the extent that it may conflict
therewith and shall be deemed modified to conform with such statute or rule of
law.  Any such provision which may prove invalid or unenforceable under any law
shall not affect the validity or enforceability of any other provision of any
agreement.

          12.2     SURVIVAL.  The representations, warranties, covenants and
agreements made herein shall survive any investigation made by the Purchaser and
the closing of the transactions contemplated hereby. All statements as to
factual matters contained in any certificate or other instrument delivered by or

                                      -25-
<PAGE>
on behalf of the Company pursuant hereto in connection with the transactions
contemplated hereby shall be deemed to be representations and warranties by the
Company hereunder solely as of the date of such certificate or instrument.

          12.3     SUCCESSORS AND ASSIGNS.  Except as otherwise expressly
provided herein, the provisions hereof shall inure to the benefit of, and be
binding upon, the successors, assigns, heirs, executors and administrators of
the parties hereto and shall inure to the benefit of and be enforceable by each
person who shall be a holder of the Securities from time to time.

          12.4     ENTIRE AGREEMENT.  This Agreement, the exhibits and schedules
hereto, the Related Agreements and the other documents delivered pursuant hereto
constitute the full and entire understanding and agreement between the parties
with regard to the subjects hereof and no party shall be liable or bound to any
other in any manner by any representations, warranties, covenants and agreements
except as specifically set forth herein and therein.

          12.5     SEVERABILITY.  In case any provision of the Agreement 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.

          12.6     AMENDMENT AND WAIVER.

               (a)     This Agreement may be amended or modified only upon the
written consent of the Company and the Purchaser.

               (b)     The obligations of the Company and the rights of the
holders of the Securities under the Agreement may be waived only with the
written consent of such holders of Securities.  The rights of the holder of
Preferred Stock may be waived only with the written consent of such holder.

          12.7     DELAYS OR OMISSIONS.  It is agreed that no delay or omission
to exercise any right, power or remedy accruing to any party, upon any breach,
default or noncompliance  by another party under this Agreement or the Related
Agreements, shall impair any such right, power or remedy, nor shall it be
construed to be a waiver of any such breach, default or noncompliance, or any
acquiescence therein, or of or in any similar breach, default or noncompliance
thereafter occurring.  It is further agreed that any waiver, permit, consent or
approval of any kind or character on the Purchaser's part of any breach, default
or noncompliance under this Agreement, the Preferred Stock or the Related
Agreements or any waiver on such party's part of any provisions or conditions of
the Agreement, the Certificate of Vote of Directors or the Related Agreements
must be in writing and shall be effective only to the extent specifically set
forth in such writing.  All remedies, either under this Agreement, the Preferred
Stock or the Related Agreements, by law or otherwise afforded to any party,
shall be cumulative and not alternative.

          12.8     NOTICES.  All notices required or permitted hereunder shall
be in writing and shall be deemed effectively given: (a) upon personal delivery
to the party to be notified, (b) when sent by confirmed telex or facsimile if
sent during normal business hours of the recipient, if not, then on the next
business day, (c) five days after having been sent by registered or certified
mail, return receipt requested, postage prepaid, or (d) one day after deposit
with a nationally recognized overnight courier, specifying next day delivery,
with written verification of receipt.  All communications shall be sent to the

                                      -26-
<PAGE>
Company at the address as set forth on the signature page hereof, with a copy to
Foley Hoag LLP, 155 Seaport Boulevard, Boston, MA 02210, Attention: David A.
Broadwin, Esq., facsimile number (617) 832-7000 and to the Purchaser at the
address set forth on the signature page hereto for such Purchaser, with a copy
in the case of the Purchaser to Daniel M. Laifer, Esq., 152 West 57th Street,
4th Floor, New York, NY 10019, facsimile number (212) 541-4434, or at such other
address as the Company or the Purchaser may designate by ten days advance
written notice to the other parties hereto.

          12.9     ATTORNEYS' FEES.  In the event that any suit or action is
instituted to enforce any provision in this Agreement, the prevailing party in
such dispute shall be entitled to recover from the losing party all fees, costs
and expenses of enforcing any right of such prevailing party under or with
respect to this Agreement, including, without limitation, such reasonable fees
and expenses of attorneys and accountants, which shall include, without
limitation, all fees, costs and expenses of appeals.

          12.10     TITLES AND SUBTITLES.  The titles of the sections and
subsections of the Agreement are for convenience of reference only and are not
to be considered in construing this Agreement.

          12.11     COUNTERPARTS.  This Agreement may be executed in any number
of counterparts, each of which shall be an original, but all of which together
shall constitute one instrument.

          12.12     BROKER'S FEES.  Each party hereto represents and warrants
that no agent, broker, investment banker, person or firm acting on behalf of or
under the authority of such party hereto is or will be entitled to any broker's
or finder's fee or any other commission directly or indirectly in connection
with the transactions contemplated herein, except as specified herein with
respect to the Purchaser.  Each party hereto further agrees to indemnify each
other party for any claims, losses or expenses incurred by such other party as a
result of the representation in this Section 12.12 being untrue.

          12.13     CONSTRUCTION.  Each party acknowledges that its legal
counsel participated in the preparation of this Agreement and, therefore,
stipulates that the rule of construction that ambiguities are to be resolved
against the drafting party shall not be applied in the interpretation of this
Agreement to favor any party against the other.

                  [Remainder of page intentionally left blank.]

                                      -27-
<PAGE>
     IN WITNESS WHEREOF, the parties hereto have executed the SECURITIES
PURCHASE AGREEMENT as of the date set forth in the first paragraph hereof.

COMPANY:                             PURCHASER:

IMPLANT SCIENCES CORPORATION         LAURUS MASTER FUND, LTD.

By: /s/ Anthony J. Armini            By: /s/ David Grin
Name:   Anthony J. Armini            Name:   David Grin
Title:  President                    Address:   LAURUS MASTER FUND, LTD.
Address:                                        c/o Ironshore Corporate Services
107 Audobon Road #5                             Ltd.
Wakefield, Massachusetts 01880                  P.O. Box 1234 G.T., Queensgate
                                                House, South Church Street
                                                Grand Cayman, Cayman Islands

<PAGE>

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