EXHIBIT 31.1 (b)
CERTIFICATION PURSUANT TO RULE 13a-14(a)/15D-14(a) and
SECTION 302 OF THE SARBANES-OXLEY ACT

I, Paul Weaver, certify that:

1. I have reviewed this Form 10-Q of Dynasil Corporation of America;

2. Based on my knowledge, this report does not contain any untrue statement of
a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects
the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

  a) Designed such disclosure controls and procedures, or caused such
  disclosure controls and procedures to be designed under our supervision,
  to ensure that material information relating to the registrant',
  including its consolidated subsidiaries, is made known to us by others
  within those entities, particularly during the period in which this
  report is being prepared;

  b) Designed such internal control over financial reporting, or caused
  such internal control over financial reporting to be designed under or
  supervision, to provide reasonable assurance regarding the reliability
  of financial reporting and the preparation of financial statements for
  external purposes in accordance with generally accepted accounting
  principles;

  c) Evaluated the effectiveness of the registrant's disclosure controls
  and procedures and presented in this report our conclusions about the
  effectiveness of the disclosure controls and procedures as of the end of
  the period covered by this report based on such evaluation; and

  d) Disclosed in this report any change in the registrant's internal
  control over financial reporting that occurred during the registrant's
  most recent fiscal quarter (the registrant's fourth fiscal quarter in the
  case of an annual report) that has materially affected, or is reasonably
  likely to materially affect, the registrant's internal control over
  financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed, based on
our most recent evaluation of internal control over financial reporting, to
the registrant's auditors and the audit committee of the registrant's board of
directors (or persons performing the equivalent functions):

  a)   All significant deficiencies and material weaknesses in the design or
    operation of internal control over financial reporting which are reasonably
    likely to adversely affect the registrant's ability to record, process,
    summarize and report financial information; and

  b)   Any fraud, whether or not material, that involves management or other
    employees who have a significant role in the registrant's internal control
    over financial reporting.


Date:  August 12, 2009                    /s/ Paul J. Weaver
                                     -----------------------------
                                      Paul J. Weaver
                                      Chief Financial Officer and
                                      Chief Accounting Officer