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                                                                    EXHIBIT 31.2



                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
                       AS ADOPTED PURSUANT TO SECTION 302
                       OF THE SARBANES--OXLEY ACT OF 2002

I, Frank J. Pazera, certify that;

     1)   I have reviewed this annual report on Form 10-K of Covista;

     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 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 Covista as of, and for, the periods presented in this
          annual 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-15e and 15d--15e) and internal
          control over financial reporting (as defined in Exchange Act Rules
          13a--15f and 15d--15f) 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 Covista, 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)  [omitted pursuant to the guidance of Release No. 33-8283
                   (June 5, 2003)];

               c)  Evaluated the effectiveness Covista'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 Covista's internal
                   control over financial reporting that occurred during
                   Covista's most recent fiscal quarter (Covista's fourth
                   fiscal quarter in the case of an annual report) that has
                   materially affected, or is reasonably likely to materially
                   affect, Covista's internal control over financial reporting;
                   and Covista's other certifying officers and I have disclosed,
                   based on our most recent evaluation, to Covista's auditors
                   and the audit committee of Covista's Board of Directors
                   (or persons performing the equivalent functions);

     5)   Covista's other certifying officers and I have disclosed, based on
          our most recent evaluation of internal control over financial
          reporting, to Covista's auditors and the audit committee of
          Covista'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
                   Covista'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 Covista's
                   internal control over financial reporting.


Date: April 29, 2005                   By: /s/ Frank J. Pazera
                                           ---------------------------
                                           Frank J. Pazera
                                           Chief Financial Officer



                                  EXHIBIT 31.2