EXHIBIT 99.2

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Airgas, Inc. (the "Company") on Form
10-Q for the quarter ended December 31, 2002 as filed with the Securities and
Exchange Commission on the date hereof (the "Report"), I, Roger F. Millay,
Senior Vice President - Finance and Chief Financial Officer of the Company,
certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906
of the Sarbanes-Oxley Act of 2002, that:

         (1) The Report fully complies with the requirements of section 13(a) or
             15(d) of the Securities Exchange Act of 1934; and
         (2) The information contained in the Report fairly presents, in all
             material respects, the financial condition and result of operations
             of the Company.

/s/ Roger F. Millay
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Roger F. Millay
Senior Vice President - Finance and Chief Financial Officer
(Principal Financial Officer)
February 12, 2003