Document:

AMENDMENT AND WAIVER

         This AMENDMENT AND WAIVER (this "Amendment"),  dated as of November 18,
2005, is entered into by and between SCIENCE  DYNAMICS  CORPORATION,  a Delaware
corporation  (the  "Company"),  and LAURUS MASTER FUND,  LTD., a Cayman  Islands
company ("Laurus"),  for the purpose of amending the terms of (i) the Securities
Purchase  Agreement,  dated as of February 11, 2005,  by and between the Company
and Laurus (as amended,  modified  and/or  supplemented  from time to time,  the
"Securities Purchase Agreement"),  (ii) the Secured Convertible Term Note, dated
as of February 11, 2005 (as amended,  modified and/or  supplemented from time to
time, the "Term Note") issued by the Company pursuant to the Securities Purchase
Agreement and (iii) the Registration Rights Agreement,  dated as of February 11,
2005 between the Company and Laurus (as amended,  modified  and/or  supplemented
from time to time, the  "Registration  Rights  Agreement" and, together with the
Term Note, the Securities  Purchase  Agreement and the other Related  Agreements
referred to therein, the "Loan Documents". Capitalized terms used herein without
definition  shall have the  meanings  ascribed  to such terms in the  Securities
Purchase  Agreement,  the Term Note and the Registration  Rights  Agreement,  as
applicable.

         WHEREAS,  the  Company  has  failed to pay to Laurus  when due  accrued
interest and principal in respect of the Term Note; and

         WHEREAS,  Laurus  has agreed to waive on the terms and  conditions  set
forth herein, the Events of Default that may have occurred and are continuing as
a result  of the  failure  by the  Company  to pay to  Laurus  when due  accrued
principal  in  respect  of the Term Note and as a result of the  failure  of the
Company to file the  Registration  Statement  on or before  the Filing  Date (as
defined in the Registration  Rights  Agreement) and, in consideration  therefore
and in consideration  of the other agreements set forth herein,  the receipt and
sufficiency of which is hereby acknowledged, the Company has agreed to issue the
Additional Warrant (as defined below) to Laurus;

         WHEREAS,  the Company and Laurus have agreed to make certain changes to
the Term Note as set forth herein; and

         NOW,  THEREFORE,  in consideration of the above, and for other good and
valuable  consideration,   the  receipt  and  sufficiency  of  which  is  hereby
acknowledged, the parties hereto agree as follows:

         1.  Laurus  hereby  waives  each Event of Default  that may have arisen
under: (a) Section 4.1 of the Term Note solely as a result of the failure by the
Company  to pay  Laurus  (x) the full  amount of the  principal  portion  of the
Monthly  Amount due and payable on the first  business day of each of June 2005,
July 2005,  August 2005,  September  2005,  October 2005 and November 2005 (i.e.
$[363,636.36])  (the "Overdue  Principal")  and (y) the interest  payable on the
Term Note when due on each of September 1, 2005, October 1, 2005 and November 1,
2005 (the "Overdue Interest");  and (b) Section 4.2 of the Term Note solely as a
result of the failure of the Company to file the  Registration  Statement  on or
before  the  required  Filing  Date  (as  defined  in  the  Registration  Rights
Agreement). In consideration of the waivers in this Section 1, the Company will,
on the date hereof,  pay to Laurus the unpaid  interest  accrued  under the Term
Note as of the date hereof (i.e. $[32,236.25]) ("Overdue Interest").

<PAGE>

         2. Laurus and the Company  hereby  agree that the Company  shall not be
required to pay the  principal  portion of any  Monthly  Amount due on the first
business  day of  December  2005  on such  date  (collectively,  the  "Postponed
Principal");  provided that, the Overdue  Principal and the Postponed  Principal
shall each be paid in full on the  Maturity  Date (as defined in the Term Note),
together  with  all  other  amounts  due and  payable  on such  date  under  the
Securities Purchase Agreement and the Related Agreements.

         3. In consideration of the waivers and principal  payment  deferrals in
Sections 1 and 2 above, the Company will, on the date hereof,  issue to Laurus a
seven year warrant (the  "Additional  Warrant") to Laurus to purchase  3,000,000
shares of the common stock of the Company  with an exercise  price of $0.075 per
share,  such Additional  Warrant to be in the form attached hereto as Exhibit 1.
The Company  further agrees to file a Registration  Statement (as defined in the
Registration Rights Agreement (as defined in the Securities Purchase Agreement),
to register the shares of Common  Stock that may be issued upon  exercise of the
Additional  Warrant  no  later  than  the  later  to  occur  of (x) the 30th day
following  the  date  hereof  and (y) (A) the  earlier  to occur of the 30th day
following  date upon which the  Registration  Statement  filed by the Company on
September  7,  2005  (Registration   Statement  333-128142)  has  been  declared
effective  by the SEC or has  otherwise  been  withdrawn  and (B) the  90th  day
following the date hereof (collectively, the "Filing Date"). The Filing Date, as
defined  herein,  shall be deemed to be a "Filing Date" as set forth and defined
in the Registration Rights Agreement.

         4. Laurus hereby waives any reset or adjustment to the Fixed Conversion
Price that otherwise would be required pursuant to Section 3.4(b)(C) of the Term
Note solely as a result of the Company's issuance of the Additional Warrant.

         5. The Company  understands  that it has an  affirmative  obligation to
make prompt public disclosure of material  agreements and material amendments to
such agreements.  It is the Company's  determination that this Amendment and the
terms and provisions of this Amendment,  (collectively,  the  "Information") are
material and, as such,  require  prompt public  disclosure.  The Company  hereby
agrees  that no later than the fourth  (4th ) business  day  following  the date
hereof it shall have  publicly  disclosed on Form 8-K or otherwise the existence
of this  Amendment  and the terms and  provisions of this  Amendment,  such that
Laurus shall  otherwise be permitted  after the date of such  disclosure  by the
Company  to again  engage in  transactions  with  respect to  securities  of the
Company on the same basis that it was  permitted  to engage in such  transaction
immediately prior to the date hereof. For the avoidance of doubt, the failure by
the Company to adhere to the requirements set forth in this Section 5 shall give
rise to an immediate Event of Default.

         6. Each  amendment and waiver set forth herein shall be effective as of
the date first above written (the "Amendment  Effective  Date") on the date when
(i) Laurus shall have received  payment from the Company of the Overdue Interest
(i.e. $[32,236.25]), (ii) each of the Company and Laurus shall have executed and
the Company shall have  delivered to Laurus its  respective  counterpart to this
Amendment  and (iii) the Company shall have executed and delivered to Laurus the
Additional Warrant.

                                       2
<PAGE>

         7. Except as  specifically  set forth in this  Amendment,  there are no
other amendments, modifications or waivers to the Loan Documents, and all of the
other forms, terms and provisions of the Loan Documents remain in full force and
effect.

         8. The Company  hereby  represents  and  warrants to Laurus that (i) no
Event of  Default  exists  on the  date  hereof,  after  giving  effect  to this
Amendment,  (ii) on the date hereof, after giving effect to this Amendment,  all
representations, warranties and covenants made by the Company in connection with
the Loan Documents are true,  correct and complete and (iii) on the date hereof,
after  giving  effect  to  this   Amendment,   all  of  the  Company's  and  its
Subsidiaries' covenant requirements have been met.

         9. From and after the Amendment  Effective  Date, all references in the
Loan Documents to the Securities  Purchase  Agreement,  the Term Note and/or the
Registration Rights Agreement shall be deemed to be references to the Securities
Purchase Agreement,  the Term Note and/or the Registration Rights Agreement,  as
the case may be, as modified hereby.

         10. This  Amendment  shall be binding upon the parties hereto and their
respective  successors  and permitted  assigns and shall inure to the benefit of
and be enforceable by each of the parties hereto and their respective successors
and  permitted  assigns.  THIS  AMENDMENT  SHALL BE  CONSTRUED  AND  ENFORCED IN
ACCORDANCE WITH AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK. This Amendment
may be  executed  in any  number  of  counterparts,  each of  which  shall be an
original, but all of which shall constitute one instrument.

                                       3
<PAGE>

         IN WITNESS  WHEREOF,  each of the  Company  and Laurus has caused  this
Amendment to the Loan  Documents  to be signed in its name  effective as of this
18th day of November 2005.

                                         SCIENCE DYNAMICS CORPORATION

                                         By: /s/ Paul Burgess
                                            ----------------------------------
                                              Name: Paul Burgess
                                              Title: CEO

                                         LAURUS MASTER FUND, LTD.

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

AGREED AND ACKNOWLEDGED:

M3 ACQUISITION CORP.

By: /s/ Paul Burgess
----------------------------------
     Name: Paul Burgess
     Title: President

SCIDYN CORP.

By: /s/ Paul Burgess
----------------------------------
     Name: Paul Burgess
     Title: President

                                       4LOGISTICS MANAGEMENT AGREEMENT
BETWEEN
ESSENTIALLY YOURS INDUSTRIES (HONG KONG)LIMITED
and
ALL IN ONE GLOBAL LOGISTICS LTD.
Dated September 01, 2005

1.0 Recitals

1.1 This Agreement and all attachments (called the "Agreement") is made
by Essentially Yours Industries (Hong Kong) Limited ("EYI") and All In
One Global Logistics Ltd. ("AIO").

1.2 AIO is a logistics agent that provides international freight, warehousing
and distribution services as appointed by EYI,

1.3 EYI is engaged in the  business  of  manufacturing,  trading  and  marketing
majorly water filter system, parts and nutritional products worldwide,

1.4 EYI  desires to obtain  from AIO and AIO  desires to provide EYI freight and
logistics services,

1.5 For the mutual benefit of the parties, EYI and AIO enter into this Agreement
with the  understanding  that it  shall be  implemented  in and  subject  to the
condition of this Agreement.

FOR AND IN CONSIDERATION  of the mutual  covenants  contained in this Agreement,
EYI AND AIO agree as follows:

2.0 Agreement Term

2.1 The period during which EYI may issue  Authorization(s) under this Agreement
(Agreement  Period) shall commence Sept 1, 2005 (Effective  Date) and end on Aug
31, 2007 (Expiration  Date) unless otherwise  extended by mutual written consent
by both parties.

3.0 Scope of Services

3.1 AIO  shall  provide  for EYI the  following  service  as and  when  required
whichever  in  the  mode  of  Air  Freight,  Ocean  Freight,   Logistics  and/or
Distribution services:

3.1.1 the warehouse area for EYI to store their products in HK and China.

3.1.2  keeping  inventory  records for EYI.

3.1.3 picks and packs, sorting and labeling service in HK and China.

3.1.4  distribution  service  locally in HK and China and overseas where AIO has
their representations and agents.

3.1.5 export of EYI shipments from HK and China to any parts of the world.

3.1.6 import of EYI shipments from overseas into HK and China.

3.1.7 weekly inventory, product, and lot number reports to be emailed to EYI.

3.1.8 annual inventory count to be overseen by EYI auditors.

3.1.9  AIO will act in a timely  manner  to review  and  report  on all  inbound
product shipment

3.1.10 quality control which will entail a short  information  sheet which is to
be provided to EYI in a timely manner

4.0 Performance Criteria

4.1 AIO will communicate  closely with EYI Logistics  personnel for any shipment
status within 24 hours after shipment departed or arrived.

4.2 AIO will keep EYI  informed  when  inventory  or stocks  fall into an agreed
low-level which special attention needs to be taken care of immediately.

                                       1
<PAGE>

5.0 Invoices, Pricings and Payment

5.1 AIO  shall  combine  the  billings  for all  destinations  and/or  any other
services  provided to EYI (or other key personnel or department as instructed by
EYI in written).

5.2 AIO shall prepare and issue  invoices in U.S.  Dollars  (USD)  bi-monthly in
accordance  with the  charges  and fees set forth in Exhibit A- Pricing  for the
Warehousing,  Distribution  and Freight  Services and other  Service  Quotations
approved by EYI from time to time during the billing period.

5.3 AIO will  forward  the  related  invoices /  statements  by email to EYI for
verifying and the original invoice will be mailed to EYI upon request.

5.4 EYI shall pay AIO's  invoices for the service  rendered  within fifteen (15)
calendar days of invoice date.

5.5 AIO agrees to refund a 10% Rebate to EYI on Services involving  warehousing,
distribution and transportation for any business  introduced by EYI to AIO. This
Rebate will only be made when all related due outstanding has been fully settled
to AIO.  The Rebate  will not  include  amount on duties or taxes or  Government
charges which will be per outlay, if any. However,  the rebate is not applicable
to EYI's own business.

5.6 Either party upon discovering an invoice discrepancy or error shall promptly
notify the other party in writing. Upon such notification, EYI and AIO shall use
all reasonable efforts to resolve any discrepancy within 15 days of notification
of such  discrepancy.  Disputed  amounts  shall not be deemed past due until the
discrepancy is resolved.  However, all items without disputes must be settled in
time.

5.7 In consideration  of the continuous  surge of fuel and security  surcharges,
AIO is allowed to make  adjustments  when there is official notice from airlines
or ocean  carriers or  transportation  associations.  However,  a seven (7) days
advance notice will be provided to EYI for the changes.

5.8 In situation when fuel and security surcharges come down at any time, AIO is
obliged to make the same  adjustment on their rates offered to EYI upon official
notice from airlines or ocean carriers is available.

6.0 Independent Contractor Relationship

6.1 AIO,  including its agents and employees,  is an independent  contractor and
not an employee of EYI. AIO is NOT authorized to represent and EYI disclaims any
liability from such misrepresentation during AIO performance of the Services.

                                       2
<PAGE>

7.0 Notices

7.1 All notices, requests,  approvals,  demands, and other written communication
made  pursuant  to this  Agreement  shall be given in  writing,  in the  English
language and deemed properly given when delivered in person,  or by AIO delivery
service addressed as follows:

If to EYI:      Essentially Yours Industries (Hong Kong) Limited
        7865 Edmonds Street, Burnaby, B.C., Canada, V3N 1B9

  If to AIO:    All In One Global Logistics Ltd.
        1-3 Kai Hing Road, G/F, Unit B, Kowloon Godown, Hong Kong

Or to such other address as may be specified from time to time in writing by the
applicable party.

8.0 Termination for Convenience

8.1 Both parties may terminate  this  Agreement,  at any time, by giving written
notice to the other party at the address  specified  in Article 7 - Notices,  No
less than Ninety (90) days prior to the effective date of termination  set forth
in the notice.

9.0 Force Majeure

9.1 Neither party shall be liable for failure to perform any of its  obligations
under this Agreement during any period in which such party cannot perform due to
matters beyond their control, including but not limited to, strike, fire, flood,
or other natural disaster,  war, airlines / carriers' embargo,  or riot provided
that the party so delayed  immediately  notifies  the other party of such delay.
The party so effected  shall be excused from such  performance  to the extent to
such prevention, restriction or interference;  provided, however, that the party
so  affected  shall take all  reasonable  steps with due  diligence  to avoid or
remove such cause of nonperformance and shall resume performance  hereunder with
dispatch whenever such causes are removed.

10.0 Confidential Information

10.1 The parties shall both conform the provisions of the Mutual  Non-Disclosure
Agreement.  The  provisions  of this  Agreement  shall apply to all  information
regardless of whether  ownership of the information is in the disclosing  party,
or any  subsidiary  or  affiliate  thereof,  or in any third party from whom the
disclosing party has acquired the right to sue such Confidential Information.

10.2 The  obligation  of  confidentiality  shall  survive  expiration or earlier
termination of this Agreement by three (3) years.

                                       3
<PAGE>

11.0 Liabilities of Claims for Damage and Missing

11.1 AIO agrees to carry at all times  insurance  of the kinds listed  below:  -
Employees Compensation coverage on all AIO's staff - General warehouse insurance
coverage at the maximum of USD10,000 per claim case.

11.2 Any claim  against  AIO must be in writing  and  delivered  to the  Company
within 14 days upon shipment arrived destinations.

11.3 Any claim of damage or missing in international transportation is according
to the ocean carriers / airlines'  standard terms and conditions and in any case
the maximum  liability  for AIO (on behalf of the ocean  carriers / airlines) is
limited  to  USD20.00/kg,  subject  to proof of value by  relevant  invoice  and
packing list. Any incidental,  indirect consequential or economic loss or damage
(including  but not  limited to loss of market,  profit,  revenue,  business  or
goodwill etc.) will not be compensated.

11.4 For claims of damage or missing in domestic  transportation  and  warehouse
under AIO's custody within HK and China,  the maximum  liability for AIO will be
USD5.00/kg  or maximum  USD10,000  per claim case,  subject to proof of value by
relevant  invoice and packing list. Any incidental,  indirect  consequential  or
economic loss or damage  (including  but not limited to loss of market,  profit,
revenue, business or goodwill etc.) will not be compensated.

11.5 EYI agrees to buy  additional  Insurance  Coverage at their own expenses to
protect  their  goods and  belongings  under the custody of AIO  warehousing  or
airlines or ocean carriers or during domestic transportation, when necessary.

12.0 Assignment

12.1 Either party may not,  whether by operation of law of otherwise,  assign or
otherwise  transfer  any of its rights  under this  Agreement  without the other
party's prior written consent which consent shall not be  unreasonably  withheld
and any attempted assignment or transfer,  regardless of the means, without such
consent shall be null and void. AIO may assign or subcontract any portion of the
scope of work  provided  hereunder  with prior  written  consent  of EYI,  which
consent may not be unreasonably withheld or delayed.

13.0 Disputes

13.1 Any dispute  arising under this Agreement  which is not resolved by EYI and
AIO shall be  decided by a court in HK Special  Administration  Region.  Pending
settlement of the final decision by the court, AIO shall proceed diligently with
the performance of the Agreement in accordance with EYI's direction.

14.0 Controlling Law

                                       4
<PAGE>

14.1 This Agreement  shall be interpreted and constructed in accordance with the
laws of the HK Special Administration Region.

This Agreement  constitutes the entire Agreements between the parties. All prior
agreements, negotiations, dealings and understandings,  whether written or oral,
regarding the subject matter of this Agreement are superseded.

IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be duly
executed under seal and delivered as of the date first written above.

Essentially Yours Industries                    All In One Global Logistics Ltd.
(Hong Kong) Limited

/s/ signed                                      /s/ signed

By      (Authorized Signature)                  By      (Authorized Signature)

DORI O'NEILL                                    RAY CHENG

Print Name                                              Print Name

PRESIDENT / CEO                                 GENERAL MANAGER

Title                                                   Title

Date                                                    Date

                                       5

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