Exhibit 23.1 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS 14 Exhibit 23.1 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS Avitar, Inc. We hereby consent to the incorporation by reference in the Prospectus constituting a part of this Registration Statement of our report dated November 17, 1995, relating to the consolidated financial statements of Avitar, Inc. appearing in the Company's Annual Report on Form 10-KSB for the year ended September 30, 1995. Our report contains an explanatory paragraph expressing substantial doubt about the Company's ability to continue as a going concern. BDO Seidman, LLP /s/ BDO SEIDMAN, LLP New York, New York December 16, 1996 15