EXHIBIT 31.1


                              OFFICER'S CERTIFICATE
                             PURSUANT TO SECTION 302


I, Robert Legnosky, certify that:

1.   I have  reviewed  this Form 10-Q for the  quarter  ended  March 31, 2004 of
     Celerity Systems, Inc.;

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.   I am 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)  Omitted;

     (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:  May 13, 2004

                                                 By: /s/ Robert Legnosky
                                                     ---------------------------
                                                     President and Interim
                                                     Chief Financial Officer

The introductory  paragraph of the Section 302 certification  that refers to the
certifying  officers'  responsibility for establishing and maintaining  internal
control over  financial  reporting for the company,  as well as paragraph  4(b),
have been omitted in accordance  with Release No. 33-8238 (June 5, 2003) because
the compliance  period has been extended for registrants  until the first fiscal
year ending on or after April 15, 2005.