Exhibit 23.03:  Updated  Consent from Larry O'Donnell, Independent
Auditor

                   Larry O'Donnell, CPA, P.C.
Telephone(303) 745-4545                    2280 South Xanadu Way
                                                       Suite 370
                                       Aurora, Colorado    80014




       CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANT


I hereby consent to the incorporation by reference in this
Registration Statement on Form SB-2 of  CRYOCON, INC. (formerly
known as ISO BLOCK PRODUCTS USA, INC.), and any amendments
thereto, and in any related Prospectus, of my auditor's report
dated April 28, 2000 accompanying the financial statements of ISO
BLOCK PRODUCTS USA, INC. (now known as CRYOCON, INC. ) included in
their annual report on Form 10-KSB for the fiscal year end March
31, 2000.


            /s/

By: Larry O'Donnell, CPA, P.C.


July 13, 2001

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