CONSENT OF CHARLES J. BIRNBERG, CPA INDEPENDENT AUDITOR I consent to the reference to my firm under the caption "Expert" and to the use of my report dated April 14, 2004, in the registration statement on Form SB-2 and the related prospectus of Tech Laboratories, Inc. By: /s/ Charles J. Birnberg ------------------------------- Charles J. Birnberg West Paterson, New Jersey July 30, 2004