EXHIBIT 99.1
                                  CERTIFICATION

                                  EXHIBIT 99.1
                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 Avitar,  Inc. (the  "Company") on
Form10-QSB for the period ending  December 31, 2002 as filed with the Securities
and  Exchange   Commission  on the date hereof  (the   "Report"),   I, Peter P.
Phildius,  Chief  Executive Officer  of the Company, and I, Jay C.  Leatherman,
Jr.,  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, to my knowledge, that:

     (1) The Report fully   complies  with the   requirements   of Section 13(a)
or15(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 results of operations of the
Company.

Date: February 13, 2003

 /s/ Peter P. Phildius
 ---------------------
 Peter P. Phildius Chief
 Executive Officer

 /s/ Jay C. Leatherman, Jr.
 -------------------------
 Jay C. Leatherman, Jr.
 Chief Financial Officer (Principal Financial
 and Accounting Officer), Secretary