EXHIBIT 10.1


                               ASTOR CAPITAL, INC.
                         9595 WILSHIRE BLVD., SUITE 700
                             BEVERLY HILLS, CA 90212


As of April 29, 2004


Mr. Jacques Tizabi
Chief Executive Officer
Universal Detection Technologies, Inc.
9595 Wilshire Blvd.
Beverly Hills, CA  90212

      RE:  AMENDMENT TO AGREEMENT FOR INVESTMENT BANKING AND ADVISORY
           SERVICES

Reference is made to the certain Agreement for Investment Banking and Advisory
Services, between ASTOR CAPITAL, INC. ("Astor") and UNIVERSAL DETECTION
TECHNOLOGY, INC. ("UDTT"), dated June 1, 2003 (the Agreement").

In consideration of the mutual covenants and promises contained herein, as well
as, other good and valuable consideration, the receipt and sufficiency of which
is acknowledged, the parties agree to amend the Agreement as follows:

     1.   The parties agree that for the period commencing on May 1, 2004 and
          ending on February 28, 2005, the monthly cash fee payable each month
          to Astor shall be reduced to FIVE THOUSAND DOLLARS ($5,000.00).

     2.   The Term of the Agreement shall be extended until June 30, 2005 and
          shall be automatically extended for successive one (1) year periods
          unless terminated in writing by either party not less than sixty (60)
          days prior the expiration of the proceeding year.

Except as set forth above, all other terms and conditions contained in the
Agreement shall remain in full force and effect unless and until modified in
writing and signed by the parties.

If the aforementioned is accepted and agreed to, please indicate same by
affixing your signature below, and together with ours shall represent the entire
agreement.

Sincerely,
ASTOR CAPITAL, INC.



By: /s/ Ali Moussavi
    -------------------------
Its:  Managing Partner



Accepted, Understood & Agreed:
UNIVERSAL DETECTION TECHNOLOGY, INC.



By: /s/ Jacques Tizabi
    -------------------------
Its:  Chief Executive Officer