PROMISSORY NOTE

Principal    Loan     Maturity  Loan No   Call/Coll  Account Officer Initials
             Date
$200,000.00  01-05-06          20001325842  1E/002     NEW     ***

References in the area above are for Lender's use only and do not
limit the applicability of this document to any particular loan
or item.  Any item above containing "***" has been omitted due to
test length limitations.

Borrower:  Dynasil Corporation of
           America a/k/a Dynasil           Lender: Susquehanna Patriot Bank
           Corporation of America
           a New Jersey Corporation                Marlton

           385 Cooper Road                         8000 Sagemore Drive
           West Berlin, NJ 08091                   Marlton, NJ 08053

Principal Amount: $200,000.00             Date of Note:   January 5, 2006


PROMISE  TO  PAY.  Dynasil Corporation of America  a/k/a  Dynasil
Corporation  of  America  a  New Jersey Corporation  ("Borrower")
promises to pay to Susquehanna Patriot Bank ("Lender"), or order,
in  lawful  money of the United States of America, the  principal
amount of Two Hundred Thousand 00/100 Dollars ($200,000.00) or so
much  as may be outstanding, together with interest on the unpaid
outstanding principal balance of each advance.  Interest shall be
calculated from the date of each advance until repayment of  each
advance.   Borrower also promises to pay all applicable fees  and
expenses.

PAYMENT.   Borrower will pay this loan in full  immediately  upon
Lender's  demand.  If no demand is made, Borrower will  pay  this
loan in one payment of all outstanding principal plus all accrued
unpaid  interest on January 5, 2007.  In addition, Borrower  will
pay  regular monthly payments of all accrued unpaid interest  due
as  of  each payment date, beginning February 5, 2006,  with  all
subsequent  interest payments to be due on the same day  of  each
month  after  that.   Unless  otherwise  agreed  or  required  by
applicable  law, payments will be applied first  to  any  accrued
unpaid interest; then to principal; then to any unpaid collection
costs; and then to any late charges. The annual interest rate for
this  Note  is computed on a 365/360 basis; that is, by  applying
the  ratio  of the annual interest rate over a year of 360  days,
multiplied  by  the outstanding principal balance, multiplied  by
the  actual  number of days the principal balance is outstanding.
Borrower  will pay Lender at Lender's address shown above  or  at
such other place as Lender may designate in writing.

VARIABLE INTEREST RATE. The interest rate on this Note is subject
to  change  from time to time based on changes in an  independent
index  which  is the Prime Rate as published in the  Money  Rates
Section  of the Wall Street Journal.  When a range of  rates  has
been published, the higher rate will be used (the "Index").   The
Index is not necessarily the lowest rate charged by Lender on its
loans.  If the Index becomes unavailable during the term of  this
loan,  Lender  may designate a substitute index after  notice  to
Borrower.  Lender will tell Borrower the current Index rate  upon
Borrower's request. The interest rate change will not occur  more
often  than each day. Borrower understands that Lender  may  make
loans  based  on  other rates as well.  The  Index  currently  is
7.250%  per annum.  The interest rate to be applied to the unpaid
principal  balance  of  this Note will be  at  a  rate  of  0.500
percentage points over the Index, resulting in an initial rate of
7.750%  per  annum.    NOTICE:  Under no circumstances  will  the
interest rate on this Note be more than the maximum rate  allowed
by applicable law.  '

PREPAYMENT;  MINIMUM INTEREST CHARGE.   In any event,  even  upon
full prepayment of this Note, Borrower understands that Lender is
entitled  to  a  minimum interest charge of $25.00.   Other  than
Borrower's  obligation  to  pay  any  minimum  interest   charge,
Borrower  may pay without penalty all or a portion of the  amount
owed  earlier than it is due.   Early, payments will not,  unless
agreed  to  by Lender in writing, relieve Borrower of  Borrower's
obligation  to  continue  to  make  payments  of  accrued  unpaid
interest.  Rather,  early  payments  will  reduce  the  principal
balance  due. Borrower agrees not to send Lender payments  marked
"paid  in  full",  "without recourse", or  similar  language.  If
Borrower  sends  such  a payment, Lender may  accept  it  without
losing any of Lender's rights under this Note, and Borrower  will
remain  obligated to pay any further amount owed to  Lender.  All
written communications concerning disputed amounts, including any
check or other payment instrument that indicates that the payment
constitutes  "payment  in full" of the amount  owed  or  that  is
tendered  with  other  conditions  or  limitations  or  as   full
satisfaction of a disputed amount must be mailed or delivered to:
Susquehanna  Patriot  Bank, c/o Loan Operations,  P.O.  Box  2000
Lititz, PA  17543-7030.

LATE CHARGE. If a payment is 10 days or more late, Borrower will
be charged 10.000% of the regularly scheduled payment or $20.00,
whichever is greater.  This late charge shall be paid to Lender
by Borrower for the purpose of defraying the expense incident to
the handling of the delinquent payment.

INTEREST  AFTER DEFAULT, Upon default, including failure  to  pay
upon  final  maturity, Lender, at its option, may,  if  permitted
under applicable law, increase the variable interest rate on this
Note by 4.500 percentage points over the Index. The interest rate
will not exceed the maximum rate permitted by applicable law

DEFAULT. Each of the following shall constitute an event of
default ("Event of Default") under this Note:
   Payment Default. Borrower fails to make any payment when due
   under this Note.

   Other  Defaults. Borrower fails to comply with or  to  perform
any  other  term, obligation, covenant or condition contained  in
this Note or in any of the related documents or to comply with or
to  perform any term, obligation, covenant or condition contained
in any other agreement between Lender and Borrower.

   Default  in  Favor of Third Parties. Borrower or  any  Grantor
defaults under any loan, extension of credit, security agreement,
purchase or sales agreement, or any other agreement, in favor  of
any  other creditor or person that may materially affect  any  of
Borrower's property or Borrower's ability to repay this  Note  or
perform  Borrower's obligations under this Note  or  any  of  the
related documents.

   False  Statements. Any warranty, representation  or  statement
made  or furnished to Lender by Borrower or on Borrower's  behalf
under  this  Note or the related documents is false or misleading
in  any  material  respect, either now or at  the  time  made  or
furnished or becomes false or misleading at any time thereafter.

   Insolvency.  The  dissolution  or  termination  of  Borrower's
existence  as  a going business, the insolvency of Borrower,  the
appointment  of  a receiver for any part of Borrower's  property,
any assignment for the benefit of creditors, any type of creditor
workout,  or  the  commencement  of  any  proceeding  under   any
bankruptcy or insolvency laws by or against Borrower.

   Creditor   or   Forfeiture   Proceedings.   Commencement    of
foreclosure  or  forfeiture  proceedings,  whether  by   judicial
proceeding, self-help, repossession or any other method,  by  any
creditor  of  Borrower or by any governmental agency against  any
collateral securing the loan. This includes a garnishment of  any
of  Borrower's accounts, including deposit accounts, with Lender.
However, this Event of Default shall not apply if there is a good
faith dispute by Borrower as to the validity or reasonableness of
the  claim  which  is  the  basis of the creditor  or  forfeiture
proceeding  and if Borrower gives Lender written  notice  of  the
creditor or forfeiture proceeding and deposits with Lender monies
or a surety bond for the creditor or forfeiture proceeding, in an
amount determined by Lender, in its sole discretion, as being  an
adequate reserve or bond for the dispute.

   Events Affecting Guarantor. Any of the preceding events occurs
with respect to any guarantor, endorser, surety, or accommodation
party  of  any  of  the indebtedness or any guarantor,  endorser,
surety,  or  accommodation party dies or becomes incompetent,  or
revokes  or  disputes  the validity of, or liability  under,  any
guaranty of the indebtedness evidenced by this Note. In the event
of a death, Lender, at its option, may, but shall not be required
to,  permit the guarantor's estate to assume unconditionally  the
obligations  arising under the guaranty in a manner  satisfactory
to Lender, and, in doing so, cure any Event of Default.

   Change In Ownership. Any change in ownership of twenty-five
percent (25%) or more of the common stock of Borrower.

   Adverse Change. A material adverse change occurs in
Borrower's financial condition, or Lender believes the prospect
of payment or performance of this Note is impaired.

   Insecurity. Lender in good faith believes itself insecure.

   Cure  Provisions.If any - default, other  than  a  default  in
payment is curable and if Borrower has not been given a notice of
a  breach of the same provision of this Note within the preceding
twelve  (12) months, it may be cured if Borrower, after receiving
written  notice from Lender demanding cure of such  default:  (1)
cures  the default within fifteen (15) days; or (2) if  the  cure
requires more than fifteen (15) days, immediately initiates steps
which  Lender deems in Lender's sole discretion to be  sufficient
to  cure  the default and thereafter continues and completes  all
reasonable  and necessary steps sufficient to produce  compliance
as soon as reasonably practical.

LENDER'S RIGHTS. Upon default, Lender may declare the entire
unpaid principal balance on this Note and all accrued unpaid
interest immediately due, and then Borrower will pay that amount.

ATTORNEYS' FEES; EXPENSES. Lender may hire or pay someone else to
help  collect  this Note if Borrower does not pay. Borrower  will
pay  Lender  that amount. This includes, subject  to  any  limits
under applicable law, Lender's attorneys' fees and Lender's legal
expenses, whether or not there is a lawsuit, including attorneys'
fees,  expenses for bankruptcy proceedings (including efforts  to
modify  or vacate any automatic stay or injunction), and appeals.
If  not prohibited by applicable law, Borrower also will pay  any
court costs, in addition to all other sums provided by law.

GOVERNING LAW. This Note will be governed by federal law and, to
the extent not preempted by federal law, the laws of the State of
New Jersey without regard to its conflicts of law provisions.
This Note has been accepted by Lender in the State of New Jersey.

CHOICE OF VENUE.  If there is a lawsuit, Borrower agrees upon
Lender's request to submit to the jurisdiction of the courts of
Burlington County, State of New Jersey.

RIGHT OF SETOFF. To the extent permitted by applicable law,
Lender reserves a right of setoff in all Borrower's accounts with
Lender (whether checking, savings, or some other account). This
includes all accounts Borrower holds jointly with someone else
and all accounts Borrower may open in the future. However, this
does not include any IRA or Keogh accounts, or any trust accounts
for which setoff would be prohibited by law. Borrower authorizes
Lender, to the extent permitted by applicable law, to charge or
setoff all sums owing on the indebtedness against any and all
such accounts, and, at Lender's option, to administratively
freeze all such accounts to allow Lender to protect Lender's
charge and setoff rights provided in this paragraph.


                              PROMISSORY NOTE

                      (Continued)                      Page 2

COLLATERAL. Borrower acknowledges this Note is secured by the
following collateral described in the security instruments listed
herein:
     (A)  a Mortgage dated January 5, 2006, to Lender on real
property located in Camden County, State of New Jersey
     (B)  an Assignment of Leases and Rents to Lender on real
property located in Camden County, State of New Jersey.
     (C)  collateral described in a Commercial Security Agreement
dated January 5, 2006.

LINE OF CREDIT.  This Note evidences a revolving line of credit.
Advances under this Note may be requested either orally or in
writing by Borrower or as provided in this paragraph.  Lender
may, but need not, require that all oral requests be confirmed in
writing.  All communications, instructions, or directions by
telephone or otherwise to Lender are to be directed to Lender's
office shown above.  The following person currently is authorized
to request advances and authorize payments under the line of
credit until Lender receives from Borrower, at Lender's address
shown above written revocation of his or her authority:  Craig T.
Dunham, President of Dynasil Corporation of America, a/k/a
Dynasil Corporation of America a New Jersey Corporation.
Borrower agrees to be liable for all sums either:  (A)  advanced
in accordance with the instructions of an authorized person or
(B)  credited to any of Borrower's accounts with Lender.   The
unpaid principal balance owing on this Note at any time may be
evidenced by endorsements on this Note or by Lender's internal
records, including daily computer print-outs.  Lender will have
no obligation to advance funds under this Note if:  (A)  Borrower
or any guarantor is in default under the terms of this Note or
any agreement that Borrower or any guarantor has with Lender,
including any agreement made in connection with the signing of
this Note;  (B)  Borrower or any guarantor ceases doing business
or is insolvent;  (C)  any guarantor seeks, claims or otherwise
attempts to limit, modify or revoke such guarantor's guarantee of
the Note or any other loan with Lender;   (D)  Borrower has
applied funds provided pursuant to this Note for purposes other
than those authorized by Lender; or  (E)  Lender in good faith
believes itself insecure.

SUCCESSOR INTERESTS. The terms of this Note shall be binding upon
Borrower, and upon Borrower's heirs, personal representatives,
successors and assigns, and shall inure to the benefit of Lender
and its successors and assigns.

GENERAL  PROVISIONS.  This  note  is  payable  on  demand.    The
inclusion  of  specific default provisions or  rights  of  Lender
shall not preclude Lender's right to declare payment of this Note
on  its  demand.  Lender may delay or forgo enforcing any of  its
rights  or remedies under this Note without losing them. Borrower
and any other person who signs, guarantees or endorses this Note,
to  the  extent  allowed  by law, waive presentment,  demand  for
payment, and notice of dishonor. Upon any change in the terms  of
this  Note, and unless otherwise expressly stated in writing,  no
party   who   signs  this  Note,  whether  as  maker,  guarantor,
accommodation   maker  or  endorser,  shall  be   released   from
liability. All such parties agree that Lender may renew or extend
(repeatedly and for any length of time) this loan or release  any
party or guarantor or collateral; or impair, fail to realize upon
or perfect Lender's security interest in the collateral; and take
any  other action deemed necessary by Lender without the  consent
of  or  notice to anyone. All such parties also agree that Lender
may  modify this loan without the consent of or notice to  anyone
other  than  the party with whom the modification  is  made.  The
obligations under this Note are joint and several.

PRIOR TO SIGNING THIS NOTE, BORROWER READ AND UNDERSTOOD ALL THE
PROVISIONS OF THIS NOTE, INCLUDING THE VARIABLE INTEREST RATE
PROVISIONS. BORROWER AGREES TO THE TERMS OF THE NOTE.
BORROWER ACKNOWLEDGES RECEIPT OF A COMPLETED COPY OF THIS
PROMISSORY NOTE.



BORROWER:


DYNASIL CORPORATION OF AMERICA A/K/A DYNASIL CORPORATION OF
AMERICA A NEW JERSEY CORPORATION


/s/ Craig T. Dunham               /s/ Patricia Johnson

Craig T. Dunham, President of    Patricia Johnson, Secretary of
Dynasil Corporation              Dynasil Corporation
of America. a/k/a/  Dynasil      Of America. a/k/a/ Dynasil
Corporation of America a         Corporation of America a
New Jersey Corporation           New Jersey Corporation