Exhibit 31.2

                      RULE 13a-14/15d - 14(a) CERTIFICATION

I, Stephen J. Bagley, Chief Financial Officer, certify that:

      1.    I have reviewed this quarterly report on Form 10-Q of Sono-Tek
            Corporation;

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

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

      4.    Sono-Tek Corporation'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) and internal control over financial reporting (as defined in
            Exchange Act Rules 13a-15(f) and 15d-15(f) for the issuer 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 issuer, 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 our 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 issuer's disclosure
                  controls and procedures and presented in this report our
                  conclusions about the effectiveness of 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 issuer's internal
                  control over financial reporting that occurred during the
                  issuer's most recent fiscal quarter that has materially
                  affected, or is reasonably likely to materially affect, the
                  issuer's internal control over financial reporting; and

      5.    Sono-Tek Corporation's other certifying officer and I have
            disclosed, based on our most recent evaluation of internal control
            over financial reporting, to the issuer's auditors and the audit
            committee of the issuer's board of directors:

            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
                  issuer'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 issuer's
                  internal controls over financial reporting.

Date: July 11, 2008

/s/ Stephen J. Bagley
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Stephen J. Bagley
Chief Financial Officer