Certification Pursuant to 18 U.S.C. Section 1350,
                          As Adopted Pursuant to
              Section 906 of the Sarbanes-Oxley Act of 2002

Name of Issuer: Prudential Institutional Liquidity Portfolio, Inc.

  In connection with the Report on Form N-CSR of the above-named issuer
that is accompanied by this certification, the undersigned hereby certifies,
to his or her knowledge, 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 results of operations of the Issuer.


Date: November 24, 2003                /s/Judy A. Rice
                                       ---------------------------------
                                       Judy A. Rice
                                       President and Principal
                                       Executive Officer

Date: November 24, 2003                /s/Grace C. Torres
                                       ---------------------------------
                                       Grace C. Torres
                                       Treasurer and Principal Financial
                                       Officer