Exhibit 12.1
                                                                  ------------

          Certification of the President and Chief Executive Officer
           Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I David M. Gee, certify that:

     1.  I have reviewed this annual report on Form 20-F of Marsulex Inc.;

     2.  Based on my knowledge, this annual 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 annual report;

     3.  Based on my knowledge, the financial statements, and other financial
         information included in this annual 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 annual report;

     4.  The registrant's other certifying officer 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 annual report is being prepared;

         b.  evaluated the effectiveness of the registrant's disclosure
             controls and procedures and presented in this annual report our
             conclusions about the effectiveness of the disclosure controls
             and procedures, as of the end of the period covered by this
             annual report based on such evaluations; and

         c.  disclosed in this annual report any change in the registrant's
             internal control over financial reporting that occurred during
             the period covered by the 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 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
         registrant's board of directors (or persons performing the equivalent
         function):

         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.




By:  /s/ David M. Gee
Name: David M. Gee
Title: President and Chief Executive Officer

Dated this 25th day of March, 2004


<PAGE>




   Certification of the Executive Vice-President and Chief Financial Officer
           Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I Edward R. Irwin, certify that:

     1.  I have reviewed this annual report on Form 20-F of Marsulex Inc.;

     2.  Based on my knowledge, this annual 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 annual report;

     3.  Based on my knowledge, the financial statements, and other financial
         information included in this annual 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 annual report;

     4.  The registrant's other certifying officer 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 annual report is being prepared;

         b.  evaluated the effectiveness of the registrant's disclosure
             controls and procedures and presented in this annual report our
             conclusions about the effectiveness of the disclosure controls
             and procedures, as of the end of the period covered by this
             annual report based on such evaluations; and

         c.  disclosed in this annual report any change in the registrant's
             internal control over financial reporting that occurred during
             the period covered by the 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 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
         registrant's board of directors (or persons performing the equivalent
         function):

         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.






By:  /s/ Edward R. Irwin
Name: Edward R. Irwin
Title: Chief Financial Officer


Dated this 25th day of March, 2004