Document:

MASTER ENGINEERING SERVICES AGREEMENT

      This  Master  Engineering  Services  Agreement  ("Agreement")  is made and
entered  into  this 3rd day of  February,  2004  (the  "Effective  Date") by and
between  (i)  CDEX,  Inc.,  a Nevada  corporation  with its  principal  place of
business at 1700 Rockville Pike, Suite 400, Rockville,  Maryland 20852 ("CDEX"),
and (ii) Systems 2000,  Inc., an Nevada  corporation with its principal place of
business  at  23630  North  35th  Drive,   Suite  1,  Glendale,   Arizona  85310
("Company"), who, intending to be legally bound, agree as follows:

1.    INTRODUCTION

      1.1. CDEX wishes to develop and market one or more products, each based on
its proprietary chemical detection technology, that require further development,
refinement  and/or  testing in preparation  for  manufacturing  production,  and
Company has the capacity  to, and can provide  design,  prototyping  and testing
services as well as a suite of related  services  for  products of the type CDEX
wishes to bring to market.

      1.2.  The parties  wish to enter into this  Agreement to specify the terms
under which  Company will provide such  design,  prototyping,  testing  services
and/or other complementary services for CDEX's prospective product(s), and under
which CDEX will pay for the services it engages Company to provide.

2.    SERVICES

      2.1.  DESCRIPTION  OF SERVICES.  Company will provide to CDEX the services
more  specifically  described in one or more statements of work  ("Statements of
Work")  issued from time to time under this  Agreement  in  accordance  with the
procedure  set forth in Section 2.2 below (the  "Services").  The  Services  may
include, without limitation,  the following types of services: (a) non-recurring
engineering services,  including but not limited to product design, creation and
modification  of  bills  of  materials,   engineering  drawing  packages,   work
instructions, manufacturing specifications,  fabrication documents and drawings,
and survey  documents;  (b) prototyping  services,  including but not limited to
development and testing of product prototypes;  and (c) other related design and
manufacturing services tailored to meet CDEX's needs.

      2.2.  STATEMENTS OF WORK. CDEX may, from time to time,  request Company to
provide Services to CDEX pursuant to this Agreement.  To request Services,  CDEX
will prepare and submit to Company a Statement of Work  describing  the scope of
the requested Services,  the schedule  requirements,  the required deliverables,
applicable  rates and other  charges,  whether  such work will be performed on a
time and materials basis, fixed price basis, or some other basis, and such other
details  as are  reasonably  required  for  Company  to  perform  the  requested
Services.  Each  Statement  of Work shall  become  effective  when  executed  by
authorized  representatives of each party.  Notwithstanding  the preceding,  the
parties hereby  approve the initial  Statement of Work set forth in EXHIBIT A-1.
Subsequent  Statements  of Work shall be included in this  Agreement as Exhitits
A-2, A-3, etc.

      2.3.  GOVERNING  TERMS.  Once executed by both parties,  each Statement of
Work shall become effective and shall be governed by the terms of this Agreement
and the terms in such Statement of Work. In the event of a conflict or ambiguity
between the terms of this  Agreement and the terms of any Statement of Work, the
terms of the  Statement  of Work shall  control,  but only with  respect to that
Statement of Work.  CDEX shall have no  obligation  or liability to Company as a
result of any work  performed  by Company (i) prior to the  effective  date of a
Statement of Work, or (ii) outside the scope of work  specified in the Statement
of Work, without CDEX's prior written approval.

      2.4.  ACCEPTANCE.  All Services  shall be subject to  acceptance  by CDEX,
based on its reasonable satisfaction and approval of such Services. In addition,
to the  extent any  Statement  of Work  provides  for  Company  to  prepare  any
deliverables for CDEX  ("Deliverables"),  such Deliverables  shall be subject to
the  following  acceptance  procedures.  During  the  initial  phase of any such
Statement of Work,  the parties will develop and mutually  agree in writing upon
the acceptance tests and/or other acceptance  criteria  ("Acceptance  Criteria")
that will be used to determine  whether the  Deliverables  to be provided  under
such  Statement  of Work are  acceptable  to CDEX.  Company  shall  submit  each
Deliverable to CDEX when it has been completed,  along with written notification
to CDEX that such Deliverable is ready for acceptance testing. CDEX shall have a
reasonable time after receipt of such notice to inspect and test the Deliverable
to  determine  whether  it  meets  the  applicable  Acceptance  Criteria.   Upon
completion  of such  inspection  and testing,  CDEX shall notify  Company of any
defects in the  Deliverable  which have been  identified.  Company  shall have a
reasonable  period of time in light of the work scope thereafter to correct such
defects and to resubmit the corrected Deliverable to CDEX for further acceptance

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testing.  In this regard, both parties understand and agree that the corrections
of the defects must be made  expeditiously  and not in the normal course of work
of the Company. The foregoing procedure shall be repeated as necessary until all
such  defects  have  been  corrected,  at which  point  CDEX  shall  accept  the
Deliverable  in writing.  Notwithstanding  the  preceding,  if Company  fails to
correct all defects in any Deliverable within two such correction  cycles,  CDEX
may  terminate  the affected  Statement  of Work for cause by written  notice to
Company and pursue remedies available to it under law and equity.

      2.5.  CHANGE ORDERS.  The parties  acknowledge and agree that the services
required  by CDEX may be  subject  to  change at any time and from time to time.
CDEX may request  changes to any Statement of Work  prepared in accordance  with
SECTION  2.2 in  writing,  and Company  shall  promptly  advise CDEX of the time
within which the  requested  change can be  implemented  and any change in price
and/or the scheduled completion dates for the Services.  Any such change must be
mutually agreed upon in writing by the parties before it shall become effective.
Company  shall  thereupon  implement  the  mutually  agreed upon  changes to the
Statement of Work.

3.    PAYMENTS

      3.1. SERVICE CHARGES.  In consideration  for Company's  performance of the
Services,  CDEX shall pay to Company  the  amounts  set forth in the  applicable
Statement of Work, as follows: For work performed on a time and materials basis,
CDEX will pay Company for such work on a monthly  basis,  based on the terms set
forth in the  applicable  Statement of Work. For work performed on a fixed price
basis, upon Company's successful  completion of each payment milestone set forth
in the applicable  Statement of Work,  CDEX shall be obligated to pay to Company
the associated milestone payment amount as set forth in such Statement of Work.

      3.2.  TAXES.  All amounts  payable in  accordance  with  SECTIONS  3.1 are
exclusive of all federal,  state, municipal or other governmental excise, sales,
value-added,  and use taxes  (but  excluding  any tax based on the net income of
Company) now in force or enacted in the future and,  accordingly,  the amount of
all payments hereunder is subject to an increase equal to the amount of any such
tax that  Company  may be  required  to collect or pay in  connection  with this
Agreement.

      3.3.  PAYMENT  TERMS.  Company  shall  invoice CDEX for all amounts due in
accordance  with this  SECTION 3, and CDEX shall  remit all  payments to Company
within  thirty  (30)  days  after  the date of CDEX's  acceptance  of  Company's
invoice,   such  acceptace  to  be  based  on  Company   meeting  the  invoicing
requirements  set  forth in this  Agreement  and the  Statement  of  Work,  such
acceptance which shall not be unreasonably  withheld. In addition to information
routinely  contained  in  Invoices,  each Invoice must (1) allocate all costs to
milestones or work scope  items/tasks,  (2) provide the running financial status
against  budget of each such  milestone  or work scope  item/task,  (3)  include
reasonable  supporting back up for all expenditures  over $25.00 and (4) provide
detailed  hourly time  records  broken down by  milestone or work scope item for
individuals working on the project. At the start of each project,  Company shall
contact CDEX to obtain its policies regarding invoicing, accounting support, and
acceptable expense costs (e.g.,  mileage).  Absent written agreement  otherwise,
Company shall comply with those policies.

4.    INTELLECTUAL PROPERTY

      4.1.  DEFINITION.  "Intellectual  Property"  shall  mean (i) all  patents,
copyrights, technology, business methods, techniques, know-how, processes, trade
secrets,   inventions,    proprietary   data,   formulae,   computer   software,
documentation,  creative works of authorship, and research and development data,
(ii) all  trademarks,  trade names,  service marks and service names,  (iii) all
registrations, applications, recordings, licenses and common-law rights relating
thereto,  all  rights to sue at law or in equity for any  infringement  or other
impairment  thereto,  including  the right to receive all  proceeds  and damages
therefrom, and all rights to obtain renewals, continuations,  divisions or other
extensions of legal protections  pertaining  thereto,  and (iv) all other United
States, state and foreign intellectual property.

      4.2.  CDEX  INTELLECTUAL  PROPERTY.  CDEX shall own all  right,  title and
interest  in  and  to  any  of  its  pre-existing  and  independently  developed
Intellectual Property ("CDEX Intellectual Property").

      4.3. COMPANY INTELLECTUAL PROPERTY. Company shall own all right, title and
interest  in  and  to  any  of  its  pre-existing  and  independently  developed
Intellectual Property ("Company Intellectual Property").

      4.4. DEVELOPED MATERIALS.  CDEX shall own all right, title and interest in
and to any  Intellectual  Property  developed by Company in connection  with its
performance of this Agreement  ("Developed  Materials"),  and all such Developed
Materials  shall be deemed to be "works made for hire" under the U.S.  Copyright
laws. To

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the extent that any such  Developed  Materials  are not deemed to be "works made
for hire", then Company hereby assigns to CDEX all right,  title and interest in
and to any such  Developed  Materials.  Company  hereby  agrees to  execute  any
documents  or  instruments  reasonably  necessary  to  enable  CDEX to secure or
perfect any  proprietary  rights that are assigned to CDEX  hereby.  CDEX hereby
grants to  Company,  during the term of each  applicable  Statement  of Work,  a
nonexclusive,  non-transferable,  paid  up  license  in  any  CDEX  Intellectual
Property and Developed  Materials,  in either case,  to the extent  necessary to
enable Company to perform its obligations under such Statement of Work.

      4.5.  INDEMNIFICATION BY COMPANY.  Company shall indemnify and defend CDEX
against, and otherwise hold CDEX harmless from, any and all costs,  liabilities,
damages,  losses and expenses (including reasonable attorneys' fees) arising out
of any claim that any Developed Materials or any Company Intellectual  Property,
or the use  thereof,  infringes  any patent,  copyright,  trade  secret or other
proprietary right of any third party.

      4.6.  INDEMNIFICATION  BY CDEX.  CDEX shall  indemnify and defend  Company
against,   and  otherwise  hold  Company  harmless  from,  any  and  all  costs,
liabilities, damages, losses and expenses (including reasonable attorneys' fees)
arising  out of any  claim  that  any  CDEX  Intellectual  Property,  or the use
thereof,  infringes  any patent,  copyright,  trade secret or other  proprietary
right of any third party.

      4.7.  CONDITIONS TO  INDEMNIFICATION.  Each party's obligations under this
SECTION 4 are conditioned upon (a) receipt by the  indemnifying  party of prompt
written  notification  from the party claiming  indemnification  of any claim to
which this  indemnification  may apply  (provided that failure to provide prompt
notification  shall  only  excuse  the  indemnifying  party to the  extent it is
materially prejudiced thereby), and (b) cooperation by the indemnified party, at
the indemnifying  party's request and expense,  with efforts to defend or settle
the claim.  The  indemnifying  party shall have sole  control of the defense and
settlement  efforts  subject to the  indemnified  party's  right to  participate
therein at its own expense.

5.    CONFIDENTIAL INFORMATION

      That certain  Non-Disclosure  and  Confidentiality  Agreement  between the
parties dated as of the Effective Date of this Agreement and contained herein as
Exhibit B (the  "NDA")  will  govern any and all  Confidential  Information  (as
defined  therein)  that are  exchanged  between  the  parties  pursuant  to this
Agreement,  and  such  NDA  shall  be  deemed  to be an  integral  part  of this
Agreement.  It  should be noted  that upon  execution  of the NDA  contained  as
Exhibit B, all previous NDA's between the parties are terminated.

6.    TERM AND TERMINATION

      6.1. TERM.  The term of this  Agreement  shall commence upon the Effective
Date and shall remain in effect until  terminated in accordance with SECTION 6.2
OR 6.3.

      6.2.  TERMINATION  FOR CAUSE.  Either party may terminate any Statement of
Work  issued  hereunder,  or  this  Agreement  in its  entirety  (including  all
Statements of Work then currently in effect),  in the event that the other party
has not performed any material obligation or has otherwise breached any material
term of such  Statement  of Work or of this  Agreement  upon the  expiration  of
thirty (30) days (or any longer cure period authorized by the nonbreaching party
with respect to any  individual  breach) after receipt of written notice thereof
if the breach has not then been cured.

      6.3.  TERMINATION  WITHOUT CAUSE. CDEX may terminate any Statement of Work
or this  Agreement  in its  entirety  (including  all  Statements  of Work  then
currently  in effect)  for its  convenience  at any time upon  thirty (30) days'
prior written notice to Company.  In the event of any such termination,  Company
shall cease all Services on the effective  date of  termination,  and CDEX shall
remain  obligated to pay Company for Services  rendered  prior to the  effective
date of termination, but such termination shall otherwise be without liability.

      6.4. EFFECT OF TERMINATION.  Within thirty (30) days after  termination of
this  Agreement,  the receiving  party shall  promptly  return to the disclosing
party  or  destroy  (at  the  disclosing   party's  election)  all  Confidential
Information  of the  disclosing  party then  currently in the receiving  party's
possession. Within thirty (30) days after termination of this Agreement, Company
shall promptly deliver to CDEX all CDEX Intellectual  Property and all Developed
Materials then currently in Company's possession,  whether or not such materials
have been completed.

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7.    WARRANTY

      7.1.  SERVICES.  Company  warrants that all Services  provided  under this
Agreement  shall  be  performed  in  a  professional  and  workmanlike   manner,
consistent  with  prevailing  industry best  practices.  Company  shall,  at its
expense,  re-perform any Services that are not performed in compliance with such
warranty.

      7.2. DELIVERABLES. Company warrants that, for a period of ninety (90) days
following the date of CDEX's acceptance thereof, each Deliverable provided under
this Agreement  shall perform in accordance  with its applicable  specifications
and  shall be free from  defects  in  material  and  workmanship  as a result of
negligence in Company's work.  Company shall, at its expense,  repair or replace
any  Deliverable  that is  non-conforming  as a result of  Company's  negligence
brought to its attention within the applicable warranty period.

      7.3.  DISCLAIMER.  EXCEPT AS OTHERWISE EXPRESSLY PROVIDED FOR IN SECTION 7
ABOVE,  NEITHER PARTY MAKES ANY WARRANTY TO THE OTHER PARTY OF ANY KIND, EXPRESS
OR IMPLIED,  IN RELATION TO THIS AGREEMENT OR ITS SUBJECT MATTER, AND EACH PARTY
EXPRESSLY  DISCLAIMS ANY IMPLIED  WARRANTIES OF  MERCHANTABILITY,  FITNESS FOR A
PARTICULAR PURPOSE OR OTHERWISE.

8.    LIMITATION OF LIABILITY

      IN NO EVENT  SHALL  EITHER  PARTY BE LIABLE TO THE OTHER PARTY FOR LOSS OF
PROFITS OR INDIRECT,  SPECIAL,  INCIDENTAL,  CONSEQUENTIAL OR EXEMPLARY  DAMAGES
INCURRED  BY THE  OTHER  PARTY AND  ARISING  OUT OF OR IN  CONNECTION  WITH THIS
AGREEMENT  FOR ANY CAUSE OF ACTION OF ANY KIND,  WHETHER  BASED  UPON  BREACH OF
CONTRACT  OR TORT  (INCLUDING  NEGLIGENCE),  EVEN IF THE  OTHER  PARTY  HAS BEEN
ADVISED OF THE  POSSIBILITY  OF SUCH DAMAGES.  IN NO EVENT SHALL EITHER  PARTY'S
TOTAL  LIABILITY TO THE OTHER PARTY  ARISING OUT OF OR IN  CONNECTION  WITH THIS
AGREEMENT  FOR ANY CAUSE OF ACTION OF ANY KIND,  WHETHER  BASED  UPON  BREACH OF
CONTRACT OR TORT  (INCLUDING  NEGLIGENCE)  EXCEED THE TOTAL AMOUNTS CDEX OWES TO
COMPANY FOR WORK DONE BASED ON THIS AGREEMENT.

9.    GENERAL PROVISIONS

      9.1. ASSIGNMENT.  Neither this Agreement nor any rights granted hereby may
be assigned by either party (by operation of law or otherwise) without the prior
written  consent of the other party.  Notwithstanding  the  preceding,  CDEX may
assign its rights and obligations  under this Agreement  without such consent to
an affiliate of CDEX or to any successor in interest of CDEX arising through any
merger, acquisition, combination, reorganization or sale of all or substantially
all of the assets or business of CDEX. Any attempt by either party to assign any
rights,  duties or obligations  without the requisite consent of the other party
shall be void and without force or effect.

      9.2.  MODIFICATION.  This  Agreement  can only be  modified  by a  written
amendment  duly signed by persons  authorized  to sign  agreements  on behalf of
Company  and of  CDEX  respectively,  and  any  variation  from  the  terms  and
conditions of this Agreement in any oral or written notification given by either
party shall be of no force or effect.

      9.3. SEVERABILITY.  If any provision of this Agreement shall be held to be
invalid,  illegal or unenforceable  for any reason,  the validity,  legality and
enforceability  of the remaining  provisions shall not in any way be affected or
impaired thereby.

      9.4. RELATIONSHIP OF THE PARTIES. For purposes of this Agreement, CDEX and
Company will be and shall act as independent  contractors,  and neither party is
authorized to act as an agent,  partner or joint venturer of the other party for
any  reason.  Neither  party by virtue of this  Agreement  shall have any right,
power,  or authority  to act or create any  obligation,  express or implied,  on
behalf of the other party.

      9.5.  EXPORT.  Each party and its  employees and agents shall comply fully
with all applicable laws, rules and regulations,  including, but not limited to,
the  United  States  Export  Administration  Act,  any  regulations  promulgated
thereunder  by the U.S.  Department  of  Treasury's  Office  of  Foreign  Assets
Control, or the U.S.  Department of Commerce's Bureau of Export  Administration,
and any other  regulations  of the U.S.  Government,  relating  to the export or
reexport of items  relevant to this  Agreement  including any related  technical
data.

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      9.6. NOTICES. All notices,  except as stated below with respect to Section
6, shall be in writing and shall be deemed to be delivered when deposited with a
recognized  courier  service,  or when sent by facsimile  transmission  promptly
confirmed by return transmission. With respect to Section 6, Notice is deemed to
be  delivered  upon actual  receipt by the other  party.  All  notices  shall be
directed to CDEX or Company at the respective addresses first set forth above or
to such other  address  as either  party may,  from time to time,  designate  by
notice to the other party.

      9.7.  GOVERNING LAW. This  Agreement,  and any and all claims  (whether in
contract,  tort or otherwise)  that may arise out of or in connection  with this
Agreement,  and the  Services  will be  governed  by the  laws of the  State  of
Maryland, excluding its conflicts of law principles.

      9.8. NO COMPETE. Company acknowledges and agrees that CDEX may disclose to
Company in connection with the Services  details  regarding  CDEX's  proprietary
information  which are highly  sensitive,  and that it will be  difficult if not
impossible to determine  whether such disclosure may lead to  unauthorized  use.
Consequently,  Company  hereby  agrees  that,  for a period of three  years from
completion of any Statement of Work issued under this Agreement,  Company agrees
not to offer, sell or otherwise commercialize any fluorescence-based  product or
technology,   or  any  service  utilizing  any  fluorescence-based   product  or
technology   that,   in   any   such   case,   are   competitive   with   CDEX's
fluorescence-based products, technology or services.

      9.9.  FORCE  MAJEURE.  Neither  party  shall be liable for any  damages or
penalty for any delay in performance  of, or failure to perform,  any obligation
hereunder or for failure to give the other party prior notice  thereof when such
delay or failure is due to the elements,  acts of God, delays in transportation,
governmental acts, or other causes beyond that party's reasonable control.

      9.10.  NO  WAIVERS.  No express or implied  waiver by either  party of any
event of default  hereunder shall in any way be, or be construed as, a waiver of
any future or subsequent event of default.

      9.11. SURVIVAL. The respective rights and obligations of the parties under
Sections 4, 5, 6.4, 7, 8, 9.3, 9.4, 9.6, 9.7, 9.9,  9.10,  9.11,  9.12, and 9.13
shall survive the termination of this Agreement.

      9.12. TITLES AND CAPTIONS. Titles and captions contained in this Agreement
are inserted for convenience or reference only, shall not be deemed to be a part
of this  Agreement  for any other  purpose,  and shall not in any way  define or
affect the meaning, construction or scope of any of the provisions hereof.

      9.13.  COUNTERPARTS.  This  Agreement  may be  executed  in  two  or  more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.

      9.14.  ENTIRE  AGREEMENT.  The  parties  acknowledge  that this  Agreement
(including  the NDA),  together with any  Attachment  hereto that is executed by
both  parties,  sets  forth  the  final,  complete,   exclusive  and  integrated
understanding of the parties which supersedes all proposals or prior agreements,
oral or written, and all other prior communications between the parties relating
to the subject matter of this Agreement.

      IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as of
the date first above written.

CDEX, INC. (CDEX)                          SYSTEMS 2000, INC. (COMPANY)

By: /s/ Malcolm H. Philips                 By: [SIGNATURE ILLEGIBLE]
    -----------------------------              ---------------------------------
    Title: CEO & President                     Title:
    Date:  2/3/04                              Date:

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                                    EXHIBIT B

                  NON-DISCLOSURE AND CONFIDENTIALITY AGREEMENT

      This Non-Disclosure and Confidentiality Agreement (the "Agreement"),  made
      effective as of January 26, 2004 (the  "Effective  Date"),  by and between
      CDEX Inc., a Nevada  corporation (the "Company"),  and Systems 2000, Inc.,
      an Arizona corporation (the "Consultant").

      WHEREAS, there exist certain confidential and proprietary  information and
      intellectual  property  rights  which are  important to the success of the
      Company,  and as an  express  condition  for the  Company's  agreement  to
      discuss with  Consultant  items of mutual  interest and to provide Company
      with  access to the said  confidential  and  proprietary  information  and
      intellectual property rights, the Consultant has agreed that it would keep
      confidential  and  not  disclose  the  Company's  said   confidential  and
      proprietary  information  and  intellectual  property  rights,  and  would
      execute this confidentiality and non-disclosure agreement to that effect.

      NOW, THEREFORE,  in consideration of the above, the rights and obligations
      set forth  herein,  and other  valuable  considerations,  the  receipt and
      sufficiency  of which the parties hereby  acknowledge,  the parties hereby
      agree as follows:

1.    CONFIDENTIAL  INFORMATION.  The term  "Confidential  Information"  as used
      herein  means  trade   secrets,   confidential   business  or   commercial
      information,   customer  lists,  vendor  lists,   technical   information,
      know-how,  inventions,  patents,  discoveries (whether or not patentable),
      copyrights, trademarks, service marks, techniques, data, systems, methods,
      processes,  improvements,  developments,  enhancements, and modifications,
      and other  proprietary  rights,  whether  oral or written,  or in recorded
      form,  tangible  or  intangible,  that  are  from  time to time  owned  or
      possessed  by or on  behalf  of the  Company  or  any  entity  related  by
      ownership to the Company.

2.    NO LICENSE. All Confidential  Information disclosed to the Consultant,  or
      which is or may be available to the Consultant, shall be held in trust and
      confidence by the  Consultant  for the Company.  No interest or license of
      any right respecting the Confidential Information, other than as expressly
      set out  herein,  is granted to the  Consultant  under this  Agreement  by
      implication or otherwise.

3.    THE PURPOSE. The Consultant shall not use the Confidential  Information in
      any manner except as is  reasonably  required for the  performance  of the
      Services  Agreement  between  Consultant  and CDEX dated January 26, 2004.
      Such use shall be referred to herein as the "Purpose".

4.    PROTECTION OF CONFIDENTIAL  INFORMATION.  The Consultant  shall use his or
      her  best  faith  efforts  to  protect  the  Company's   interest  in  the
      Confidential Information and to keep it confidential,  using a standard of
      care no less than the degree of care that the Consultant  would reasonably
      be  expected to employ for its own similar  confidential  information.  In
      particular,  the Consultant shall not,  directly or indirectly,  disclose,
      allow access to,  transmit or transfer the  Confidential  Information to a
      third party without the Company's prior written consent.  Moreover, except
      as  necessary  for the work  being  performed  by the  Consultant  and its
      employees, the Confidential Information shall not be copied, reproduced in
      any form or stored in a retrieval  system or  database  by the  Consultant
      without the prior written  consent of the Company.  The  Consultant  shall
      promptly notify the Company of any unauthorized  disclosure,  release,  or
      transfer of the  Confidential  Information  and shall  provide  reasonable
      assistance to terminate such unauthorized use or disclosure.

5.    RETURN OF CONFIDENTIAL INFORMATION.  The Consultant shall, upon request of
      the Company  immediately return to the Company or destroy,  as the Company
      shall select,  the Confidential  Information and all copies thereof in any
      form whatsoever under the possession,  power or control of the Consultant.
      Upon request,  the Consultant shall provide the Company with a destruction
      certificate.

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6.    EXCEPTIONS.  The obligations of the Consultant  under Sections 1, 2, 3, 4,
      and 5 herein shall not apply to Confidential Information which is required
      to be disclosed by an order of a governmental agency,  legislative body or
      court  of  competent  jurisdiction  (provided  that  the  receiving  party
      provides the  disclosing  party with  immediate  notice of such request or
      requirement),  or  which  at the  time of  disclosure  is,  or  thereafter
      becomes,  available to the trade or the public without  restriction  other
      than through the fault, negligence,  or other acts of the Consultant.  The
      Consultant understands that public availability,  or the availability from
      a third party,  of the individual  parts of the  Confidential  Information
      does not release his obligation of confidence for Confidential Information
      that is not already publicly available.

7.    VIOLATION  OF  AGREEMENT.  Any  violation  or  attempted  violation of any
      provision of this  Agreement by the Consultant is an  unauthorized  use of
      the  Confidential  Information and shall be deemed to be a material breach
      of this Agreement.  The Consultant hereby agrees to indemnify,  defend and
      hold  harmless  the  Company  from any and all  claims,  losses,  actions,
      injuries,  damages, fines, penalties, or other liabilities,  including but
      not limited to loss of profits and other economic losses,  attorneys' fees
      and court costs, resulting from or related to the breach of this Agreement
      by the Consultant.  Without prejudice to the rights and remedies otherwise
      available,  the Company shall be entitled to equitable relief, such as for
      an injunction or specific  performance,  without the need to post any bond
      or surety,  if the  Consultant  should breach or threaten to breach any of
      the provisions of this Agreement. In the event that any enforcement action
      is taken by either party hereunder, including filing an action in court or
      in arbitration, the prevailing party shall be entitled to recover from the
      losing party its costs and expenses,  including its reasonable  attorneys'
      fees and court costs.

8.    TERM. The term of this  Agreement  shall commence as of the Effective Date
      and shall  continue  until  five (5) years  after the  termination  of the
      related Engineering Services Agreement associated with this Agreement.

9.    ARBITRATION.  Any failure to perform,  controversy or claim arising out of
      or  relating to this  Agreement  or the  breach,  termination  or validity
      thereof,  other than an action by the  Company  for  injunctive  relief or
      specific  performance,  shall be determined  exclusively by arbitration in
      accordance  with the rules of the  American  Arbitration  Association  for
      arbitrating   commercial  matters.   The  arbitration  shall  be  held  in
      Washington,  D.C., the surrounding  metropolitan area of Maryland, or such
      other location as the parties shall mutually agree. The arbitrators  shall
      base their award on applicable  Maryland law and judicial  precedent,  and
      shall accompany their award with written  findings of fact and conclusions
      of law. All expenses and fees of the  arbitrator  and expenses for hearing
      facilities,  stenographers,  including  attorneys'  fees and the  costs of
      expert witnesses,  and other expenses of the arbitrators shall be borne by
      the prevailing party; provided, however, that the arbitrators may allocate
      a portion of such expenses to the other party if the  arbitrators  believe
      such a measure  is  justified  by the  conduct of the  parties  during the
      arbitration.

10.   MISCELLANEOUS. This Agreement constitutes the entire agreement between the
      parties  hereto with respect to the subject  matter  hereof.  There are no
      representations, warranties, terms, conditions, undertakings or collateral
      agreements,  express, implied or statutory, between the parties respecting
      the  subject  matter  hereof  other  than as  expressly  set forth in this
      Agreement. The Section and subsection headings contained in this Agreement
      are inserted for convenience of reference only,  shall not be deemed to be
      a part of this Agreement for any purpose,  and shall not in any way define
      or affect  the  meaning,  construction  or scope of any of the  provisions
      hereof.

                                       7
<PAGE>

      IN WITNESS  WHEREOF,  the  Consultant  and the Company have  executed this
Non-Disclosure and  Confidentiality  Agreement as set forth below as of the date
given above.

CDEX-INC.

By:                               /s/ Malcolm H. Philips                  (SEAL)
                                  ----------------------------------------
                                  Malcolm H. Philips
                                  ----------------------------------------
                                        Printed Name

SYSTEMS 2000, INC.

By:                               [SIGNATURE ILLEGIBLE]                   (SEAL)
                                  ----------------------------------------

                                  ----------------------------------------
                                        Printed Name

                                       8EXHIBIT 10.13

                              EMPLOYMENT AGREEMENT

         THIS  EMPLOYMENT  AGREEMENT  is entered  into as of  ____________  (the
"EFFECTIVE  DATE"),  by  and  between  CDEX-Inc.,   a  Nevada  corporation  (the
"COMPANY"), and _________________. (the "EMPLOYEE").

1.       EMPLOYMENT AGREEMENT.  Subject to the terms and conditions set forth in
this  Agreement,  the Company  agrees to employ the  Employee,  and the Employee
accepts employment with the Company, in accordance with the terms and provisions
of this Agreement.

2.       TERM. This agreement shall remain in effect until  terminated  pursuant
to the termination provisions provided herein.

3.       SERVICES  OF THE  EMPLOYEE.  The  Employee  shall  serve  initially  as
______________  and, as the needs of the Company dictate,  in other positions as
directed by the Company. The Employee shall faithfully perform such services for
the  business and affairs of the Company (the  "SERVICES").  The Employee  shall
devote his best and exclusive  efforts and attention to the  performance  of the
Services and shall expend such time as may be required to perform the  Services.
The Employee shall not perform  services for  compensation  for any other entity
except the Company  during the term of this  Agreement,  except with the express
written consent of the Company.

4.       PLACE OF  PERFORMANCE.  The Employee  shall be  initially  based at the
Washington DC area office. If the Company requires movement to an office greater
than fifty (50) miles from the Washington DC area, it will provide Employee with
reasonable moving expenses.

5.       SALARY.

         5.1. SALARY.  Employee's  annual salary shall be  $______________  (the
"SALARY").  The Company shall review the Salary on an annual  basis.  The Salary
shall be payable in equal monthly  installments,  or in installments as required
by applicable State law. To the extent that the financial posture of the Company
is such that paying the full monthly installment to Employee would not be in the
Company's best interest,  at the option of the Company,  monthly compensation in
excess of $8,000 may be deferred  until the end of the then current  fiscal year
and paid in cash or paid in  restricted  stock or stock  options of the Company.
Such stock of the Company shall be subject to all  applicable  federal and state
laws,  rules and  regulations  related to  restricted  stock.  The Company shall
impose no other  restrictions  in relation to such  restricted  stock except for
those that arise by application  of federal or state laws,  rules or regulations
relating to such restricted stock.

<PAGE>

         5.2 BONUS. At the discretion of Company, the Employee shall be eligible
for an annual  performance  bonus.  Bonuses  (including  stock  bonuses)  may be
distributed  based  on  Company  performance  and  the  Employee's  role in that
performance.

         5.3.  BENEFITS.  The  Employee  shall be  entitled  to receive any such
benefits as the Company may make  available to its employees  from time to time.
Nothing  contained in this Agreement  shall prevent the Company,  at any time or
from time to time,  from  effecting  modifications  in the  benefits,  including
eliminating any or all of such benefits.

         5.4 VACATION;  HOLIDAYS.  The Employee  shall be entitled to all public
holidays as are observed by the Company and vacation days in accordance with the
applicable vacation policies of the Company. The Employee shall take holidays at
a reasonable time or times for the Company.

         5.5  EQUITY  PARTICIPATION.  Pursuant  to this  Agreement,  ___________
shares of restricted  common stock of the Company (the "INITIAL  STOCK") will be
issued to Employee,  subject to the  graduated  repayment  provisions  set forth
below.  The  Employee  agrees to  comply  strictly  with all legal  requirements
regarding the stock,  including  those related to  distribution of the stock and
restrictions associated with the stock.

              5.5.1. REPAYMENT. Notwithstanding the remainder of the Section, if
the  Employee's  services  to the  Company  are  terminated  because of death or
disability  (defined as the inability to  substantially  perform the Services by
reason of any medically determined physical or mental impairment that is or will
be a permanent  condition or one that will continue for at least three  months),
the Employee has no obligation to repay any of the Initial  Stock.  The Employee
shall repay in  accordance  with the  following  repayment  schedule part of the
shares of the Initial Stock (or other equivalent shares of the Company stock) if
the Employee's services are terminated prior to _____________ by the Company for
"Cause" or by Employee  without "Good Reason" as those terms are defined in this
Section 5.5. In either event,  then within sixty (60) days thereafter,  Employee
shall repay to the Company a portion of that Initial  Stock in  accordance  with
the following schedule.

                          (a) if termination  occurs prior to  ___________,  the
Employee shall repay seventy percent (70%) of the Initial Stock;

                          (b) if termination  occurs after ___________ but prior
to  ___________the  Employee  shall repay  thirty  percent  (30%) of the Initial
Stock;

                          (c) If termination  occurs after  _________________but
prior to  ____________the  Employee  shall repay  fifteen  percent  (15%) of the
Initial Stock;

              5.5.2  TERMINATION  FOR  CAUSE.  Termination  by the  Company  for
"CAUSE" shall be limited to any of the following:

                                       2
<PAGE>

                    (i) The  conviction  of the  Employee  of, or a plea of nolo
contendere by the Employee to, a felony;

                    (ii) The  intentional  fraud by the  Employee on, or willful
misappropriation  by the Employee of, funds or property  belonging to or claimed
by the Company and exceeding $1000.00 in an aggregate amount;

                    (iii)  Intentional  misconduct by the Employee in connection
with the  performance  of duties,  or the  Employee's  failure  to  perform  the
Services in the best interests of the Company  (including,  without  limitation,
material  breach by the  Employee in  performance  of the Services but not minor
violations  of  rules  and  policies  of the  Company)  that  substantially  and
adversely impacts the Company;

                    (iv) The Employee's  chronic use of alcohol,  drugs or other
similar substances affecting work performance;

                    (v) The material  breach by the Employee of the  performance
of any material  part of the Services or the material  breach by the Employee of
any agreement that is referenced in Section 9 that  substantially  and adversely
impacts the Company; or

                    (vi) The material breach by the Employee of any provision of
this Agreement that substantially and adversely impacts the Company.

              5.5.3 TERMINATION FOR GOOD REASON. Termination by the Employee for
"Good Reason" shall be limited to any of the following:

                    (i) The  occurrence  of a material  breach by the Company of
any provision of this Agreement  that  significantly  and adversely  impacts the
Employee;

                    (ii) A significant reduction or modification in the Services
of Employee that is inconsistent with Employee's title or position;

                    (iii) The  approval of a plan by the Board of  Directors  of
the Company  involving  the  dissolution  of the Company  that is not  rescinded
within thirty (30) days after its approval; or

                    (iv) The  involuntary or voluntary  filing for bankruptcy of
the  Company  that is not  dismissed  within  ninety (90) days after the date of
filing.

              5.5.4  REPURCHASE   RIGHTS.  In  the  event  that  the  Employee's
employment is  terminated,  then the Company  shall have the right,  but not the
obligation,  to repurchase  all or a part of the Initial Stock then owned by the
Employee at a price equal to fair market value,  less any appropriate  discounts
for the  restrictive  nature of, and the minority  interest  represented by, the
Initial Stock.  In the event that the parties can not mutually agree on the fair
market value of the Initial Stock,  the value shall be determined by arbitration
in accordance  with the  provisions  of Section 12, except that the  arbitrators
shall  each be  qualified  appraisers  having at least ten years  experience  in
valuing commercial businesses,  similar in nature to that of the Company, in the
metropolitan Washington D.C area, and the decision of the arbitrator(s) shall be
final and conclusive on both parties.

                                       3
<PAGE>

              5.5.5  COMPLIANCE.  The  Employee  acknowledges  that the issuance
and/or  registration of the Company's stock must comply with all applicable laws
and regulations relating thereto. Accordingly, the Employee agrees that he shall
accept  shares  of the  Company's  stock  subject  to all  applicable  laws  and
regulations,  and shall  provide and  deliver to the  Company  all  information,
certifications,  and other  documentation  as may be requested by the Company as
part of the  Company's  compliance  with any  applicable  laws  and  regulations
relating to the issuance  and/or  registration  of any of the  Company's  stock,
including but not limited to the Initial Stock.

6.       EXPENSES.  The Company shall  reimburse the Employee for all reasonable
business  expenses  incurred by the Employee that are authorized by the Company.
Reimbursement  shall be made in  accordance  with the  policies  of the  Company
related to reimbursable expenses.

7.       TERMINATION OF EMPLOYMENT. The Employee's services for the Company will
continue  until  terminated in accordance  with the  provisions of this Section.
Employment  hereunder may be terminated (i) by either party upon two weeks prior
written notice (the "NOTICE OF TERMINATION"), or (ii) immediately upon the death
of the Employee.  All Parties  acknowledge that Employee is an employee at will.
The date given in the Notice of  Termination  as the last day of the  Employee's
employment  shall be deemed  the "DATE OF  TERMINATION".  This  Agreement  shall
terminate on the Date of  Termination  except as  otherwise  provided in Section
13.4.  The Company  shall pay the Employee  the then current  Salary of Employee
through the Date of Termination and all other unpaid  amounts,  if any, to which
the  Employee  is  entitled  as of the  Date of  Termination,  such as  expenses
(Section 6).

8.       CDEX AGREEMENTS. As an express condition for the Company's agreement to
enter into this Agreement,  and as a pre-condition to the  effectiveness of this
Agreement,  the Employee  agrees to (i) keep the  confidential  and  proprietary
information  and the  intellectual  property of the Company  confidential;  (ii)
assign to the Company  all of the  ownership  rights in and to any  intellectual
property relating to the Company and its business that is developed, created, or
discovered  during the term of this  Agreement;  and (iii)  agree not to compete
with the  Company  and its  business  or  solicit  the  Company's  customers  or
employees  during the period of employment  with the Company and for a period of
three (3) years  thereafter.  To further provide for the  implementation of this
provision,  the Employee shall execute a CDEX Non-disclosure and Confidentiality
Agreement and a CDEX Non-Compete and  Non-Solicitation  Agreement (jointly,  the
"CDEX AGREEMENTS"),  copies of which are attached hereto as Exhibit A, the terms
and conditions of which are  specifically  incorporated  herein by reference.  A
breach by the  Employee of a provision  in any of the CDEX  Agreements  shall be
deemed a material breach of this Agreement by the Employee.

9.       OWNERSHIP OF INTELLECTUAL PROPERTY.

         10.1. THE BUSINESS. The parties acknowledge that the Company is engaged
in the  development,  marketing  and sale of certain  proprietary  technologies,
processes  and related  products in the areas of chemical  detection,  technical
processes, and technical/business services,

                                       4
<PAGE>

and that the  Company  may also from time to time become or may intend to become
engaged  in  other  business  endeavors  (individually  and  collectively,   the
"BUSINESS").  The  Company  shall be deemed to  intend  to become  engaged  in a
business  endeavor  if it has  devoted or expended  any  significant  resources,
either financial or human resources,  towards the proposed  endeavor,  either in
planning or implementing the undertaking of such planned endeavor.

         10.2. THE INTELLECTUAL  PROPERTY. In connection with this Agreement and
the performance of the Services,  the Employee acknowledges that there may exist
now  or may  exist  in  the  future  trade  secrets,  confidential  information,
technical information,  know-how,  inventions,  patents, discoveries (whether or
not  patentable),  copyrights,  trademarks,  service  marks,  techniques,  data,
systems,  methods,  processes,  improvements,  developments,  enhancements,  and
modifications,  whether  oral or  written,  or in  recorded  form,  tangible  or
intangible,  and  other  proprietary  rights,  which  are or  may be  conceived,
developed,  designed or otherwise created, modified or improved by the Employee,
in whole or in part,  or which the  Employee may receive,  produce,  obtain,  or
learn about,  in whole or in part, in  connection  with the  performance  of the
Services or  relating  in any way or manner to, or arising out of, the  Business
and the  operations of the Company during the term of this  Agreement,  or which
the  Employee  may  develop or make from or by reason of  knowledge  gained from
employment (collectively, the "INTELLECTUAL PROPERTY"). The Employee agrees that
all rights, title and interest in and to the Intellectual  Property shall belong
to the Company and shall be  considered  as "work made for hire".  The  Employee
shall make prompt and  complete  disclosure  from time to time to the Company of
all  Intellectual  Property  developed  by the  Employee,  either  solely  or in
conjunction with others.

         10.3.  ASSIGNMENT  OF RIGHTS TO  INTELLECTUAL  PROPERTY.  The  Employee
hereby  assigns to the Company any and all right,  title and  interest  that the
Employee has now or may have in the future in and to the Intellectual  Property.
The Employee agrees to execute any  instruments and to do all things  reasonably
requested by the Company,  both during and after the term of this Agreement,  to
vest the Company with all ownership rights in the Intellectual  Property. If any
Intellectual Property can be protected by copyrights,  patents,  trademarks,  or
service marks, then such copyright,  patent,  trademark, or service mark, as may
be applicable, shall be owned solely, completely and exclusively by the Company,
and the Employee shall execute such  assignments and other documents and provide
such  assistance as the Company may  reasonably  request in order to protect the
Company's ownership of the Intellectual  Property.  The Employee hereby appoints
the Company as his attorney-in-fact to execute any document that the U.S. Patent
and  Trademark  Office,   the  U.S.  Copyright  Office,  or  any  other  similar
governmental or quasi-governmental  entity in any state or foreign country shall
require in order to establish,  protect,  and record the Company's  ownership of
all of the rights, title and interests in and to the Intellectual Property. This
appointment  of the  Company as the  attorney-in-fact  for the  Employee  to act
hereunder is irrevocable.

         10.4.  SURVIVORSHIP.   The  terms  of  Section  10  shall  survive  the
termination of this Agreement and shall continue until the later of (i) five (5)
years  after  the Date of  Termination,  or (ii)  fifty  (50)  years  after  the
Effective Date.

                                       5
<PAGE>

11.      DEFAULT.  The Employee  acknowledges that many of the provisions herein
are of a special and unusual character that have and will have a unique value to
the Company, the loss of which cannot adequately be compensated in damages in an
action at law. Any violation or attempted violation of any provisions of Section
9, Section 10 or any  provisions  of any of the CDEX  Agreements by the Employee
shall be deemed to be a material breach of this  Agreement.  The Employee hereby
agrees to  indemnify,  defend and hold  harmless  the  Company  from any and all
claims,  losses,  actions,   injuries,   damages,  fines,  penalties,  or  other
liabilities,  including  but not limited to loss of profits  and other  economic
losses, attorneys' fees and court costs, resulting from or related to a material
breach of this Agreement by the Employee.

         11.1.  EQUITABLE  RELIEF.  The  parties  acknowledge  that any  damages
incurred  by the  Company as a result of any breach of Section 9,  Section 10 or
the breach of any other  material  provision of this Agreement will be great and
irreparable  and  difficult  to  quantify.  Without  prejudice to the rights and
remedies  otherwise  available,  and  without  the need for  posting any bond or
surety,  the  Company  shall be  entitled to  equitable  relief,  such as for an
injunction or specific performance, if the Employee should breach or threaten to
breach any of the provisions of this Agreement.

         11.2.  REMEDIES  AVAILABLE.  Subject to the requirement for arbitration
under Section 12, nothing  herein shall be construed as prohibiting  the Company
from  pursuing  any  remedies,  both  federal  and  state,  legal or  equitable,
available to the Company for any breach or threatened breach by the Employee.

         11.3.  RECOVERY OF COSTS. In the event that any  enforcement  action is
taken by  either  party  hereunder,  including  filing  an action in court or in
arbitration,  the prevailing  party shall be entitled to recover from the losing
party its costs and expenses, including its reasonable attorneys' fees and court
costs.

12.      ARBITRATION.  Any failure to perform,  controversy or claim arising out
of or relating to this Agreement or the breach, termination or validity thereof,
other than an action for equitable  relief,  shall be determined  exclusively by
arbitration  in  accordance  with  the  provisions  of  this  Section  12 and in
accordance  with  the  rules  of  the  American   Arbitration   Association  for
arbitrating  commercial  matters.  The arbitration  shall be held in Washington,
D.C., the surrounding  metropolitan area of Maryland,  or such other location as
the parties shall  mutually  agree.  The  arbitrators  shall base their award on
applicable Maryland law and judicial precedent,  and shall accompany their award
with  written  findings  of fact and  conclusions  of law.  The  decision of the
arbitrators shall be binding on the parties, except that either party may appeal
the arbitrators'  decision by filing an action to reconsider the decision of the
arbitrators  in a court having  jurisdiction  hereunder.  In any such action the
arbitrators'  findings of fact shall be  conclusive  and binding on both parties
and the sole questions to be determined by the court shall be (i) whether or not
the arbitrators'  decision was contrary to Maryland law and judicial  precedent,
and (ii) if the court determines that the arbitrators'  decision was contrary to
Maryland  law and  judicial  precedent,  then how the dispute  shall be resolved
based on the  arbitrators'  findings  of facts  and  Maryland  law and  judicial
precedent.  The decision of the court as to the  resolution of the dispute under
Maryland law and judicial  precedent shall supercede the

                                       6
<PAGE>

arbitrators' decision.  Judgment upon the award rendered by the arbitrators,  as
modified  by the  court,  if  applicable,  may be  entered  in any court  having
jurisdiction in accordance herewith.

         12.1 SELECTION OF ARBITRATORS.  An arbitrator shall be selected by each
of the parties,  and the arbitrators shall mutually select another arbitrator to
serve  with  them  so  that  there  shall  be  an  odd  number  of  arbitrators.
Alternatively,  the  parties  may  agree to  accept a  single  arbitrator  to be
mutually  agreed  upon by the  parties.  Each  person  serving as an  arbitrator
hereunder  shall be a  professional  with  excellent  academic and  professional
credentials  who has had  experience  as an  arbitrator  and at least  ten years
experience  in the field of  resolving  commercial  disputes  in the  Washington
Metropolitan area.

         12.2 DISCOVERY. Each party shall, upon the written request of the other
party,  provide the other with copies of documents relevant to the issues raised
thereby.  Other  discovery may be ordered by the  arbitrators  to the extent the
arbitrators deem additional  discovery  appropriate,  and any dispute  regarding
discovery,  including disputes as to the need therefor or the relevance or scope
thereof,  shall be determined by the arbitrators,  which  determination shall be
conclusive.

         12.3 ARBITRATION EXPENSES.  All expenses and fees of the arbitrator and
expenses for hearing facilities, stenographers,  including reasonable attorneys'
fees and the costs of expert  witnesses,  and other expenses of the  arbitrators
shall  be  borne  by the  non-prevailing  party;  provided,  however,  that  the
arbitrators  may  allocate a portion of such  expenses to the other party if the
arbitrators  believe  such a measure is  justified by the conduct of the parties
during the arbitration.

         12.4  CONFIDENTIALITY  OF  PROCEEDINGS.   The  arbitration  proceedings
conducted  pursuant hereto shall be  confidential.  Neither party shall disclose
any  information  about the  evidence  adduced  by the other in the  arbitration
proceeding  or about  documents  provided  by the other in  connection  with the
proceeding  except  in the  course  of a  judicial,  regulatory  or  arbitration
proceeding or as may be requested by a governmental authority. Before making any
disclosure permitted by the preceding sentence, the party intending to make such
disclosure shall give the other party reasonable  written notice of the intended
disclosure and afford the other party opportunity to protect its interests.  The
arbitrators,  expert witnesses and stenographic reporters shall sign appropriate
nondisclosure agreements in order to effectuate this agreement of the parties as
to confidentiality.

         12.5 EQUITABLE RELIEF. Notwithstanding anything herein to the contrary,
any action brought by the Company for injunctive relief or specific  performance
is not subject to the requirements for arbitration hereunder,  and may be sought
in any court having  jurisdiction in accordance  herewith  without  resorting to
arbitration.

13       MISCELLANEOUS.

         13.1 NOTICES.  All notices,  demands,  requests or other communications
required  or  permitted  to be given or made  hereunder  shall be in writing and
shall be  hand-delivered  or shall be mailed  such as to  provide  assurance  of
delivery.

                                       7
<PAGE>

         13.2 REPRESENTATIONS. The Employee agrees to execute any proper oath or
verify any proper  document  required to carry out the terms of this  Agreement.
The Employee represents that this Agreement has been duly executed and delivered
by the  Employee  and  constitutes  the valid  and  binding  obligations  of the
Employee; that the execution,  delivery and performance of this Agreement by the
Employee  will not violate any  provision  of any  contract or other  agreement,
including but not limited to a non-compete or non-disclosure agreement, to which
the Employee is a party or which purports to be binding upon the Employee;  that
the Employee has carefully  read and reviewed the  provisions  set forth herein,
and having done so he agrees that those provisions, including but not limited to
the  provisions  relating to the  ownership of the  Intellectual  Property,  the
non-disclosure  of  confidential   information,   and  the  non-competition  and
non-solicitation  requirements,  are  fair  and  reasonable  and are  reasonably
required for the protection of the legitimate business interests of the Company;
and that the  Employee  has had the  opportunity  to obtain  counsel  of his own
selection to review this Agreement on his behalf.

         13.3  SEVERABILITY.  The invalidity or  unenforceability  of any one or
more   provisions   of  this   Agreement   shall  not  affect  the  validity  or
enforceability of the other provisions of this Agreement,  which shall remain in
full force and effect.

         13.4 SURVIVAL. It is the express intention and agreement of the parties
hereto  that the  provisions  of  Sections  9, 10,  and 12  hereof  and the CDEX
Agreements  shall survive the  termination of this Agreement.  In addition,  all
obligations of the Employee to repay any shares of stock, if applicable, and all
rights of the Company to  repurchase  the Initial  Stock shall also  survive any
termination of this Agreement on the terms and conditions set forth herein.

         13.5  ASSIGNMENT.  The rights and  obligations  of the  parties to this
Agreement  shall not be  assignable  or  delegable,  except  that the rights and
obligations  of the Company  hereunder  shall be  assignable  and delegable to a
subsidiary  of  the  Company  or  in  connection  with  any  subsequent  merger,
consolidation,  sale of all or substantially all of the assets of the Company or
similar reorganization of a successor corporation.

         13.6  BINDING  EFFECT.  Subject to any  provisions  hereof  restricting
assignment,  this Agreement shall be binding upon and shall inure to the benefit
of the parties and their respective heirs, devisees, executors,  administrators,
legal representatives, successors and assigns.

         13.7 AMENDMENT; WAIVER. This Agreement shall not be amended, altered or
modified except by an instrument in writing duly executed by the parties hereto.
Neither the waiver by either of the  parties  hereto of a breach of or a default
under any of the provisions of this Agreement,  nor the failure of either of the
parties,  on one or more  occasions,  to enforce any of the  provisions  of this
Agreement or to exercise any right or privilege  hereunder,  shall thereafter be
construed as a waiver of any subsequent  breach or default of a similar  nature,
or as a waiver of any such provisions, rights or privileges hereunder.

         13.8  HEADINGS.  Section  and  subsection  headings  contained  in this
Agreement are inserted for convenience of reference only, shall not be deemed to
be a part of this Agreement for

                                       8
<PAGE>

any purpose, and shall not in any way define or affect the meaning, construction
or scope of any of the provisions hereof.

         13.9 GOVERNING LAW. This  Agreement,  the rights and obligations of the
parties hereto,  and any claims or disputes relating thereto,  shall be governed
by and construed in  accordance  with the laws of the State of Maryland (but not
including the choice of law rules thereof). Any action filed in relation to this
Agreement and the  performance  of the parties  hereunder  shall be filed in the
appropriate  state court or the U.S.  District  Court having  jurisdiction  over
Rockville,  Maryland,  the parties  hereto waiving any other venue to which they
may be entitled by virtue of domicile or otherwise.  Each of the parties  hereto
waives a trial by jury in regard  to any  claims or  disputes  relating  to this
Agreement.

         13.10  ENTIRE  AGREEMENT.   This  Agreement  and  the  CDEX  Agreements
constitute the entire agreement between the parties respecting the employment of
the Employee,  there being no representations,  warranties or commitments except
as set forth herein.

         13.11  COUNTERPARTS.  This  Agreement  may be  executed  in two or more
counterparts,  each of which  shall  be an  original  and all of which  shall be
deemed to constitute one and the same instrument.

         IN WITNESS WHEREOF,  the undersigned have duly executed this Agreement,
or have caused this  Agreement to be duly executed on their behalf  effective as
of the day and year first hereinabove written.

                            CDEX-Inc.

                                 By:
                                       -----------------------------------------
                                 Name: Malcolm H. Philips, Jr.
                                       Title: President and CEO

                            Employee:

                                 By:
                                       -----------------------------------------
                                 Name:

                                       9
<PAGE>

                              EMPLOYMENT AGREEMENTS
                                    EXHIBIT A

1.      CDEX Non-disclosure and Confidentiality Agreement, signed by the Company
        and the Employee

2.      CDEX Non-Compete and Non-Solicitation  Agreement,  signed by the Company
        and the Employee

                                       10

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