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Virotec Intl Ld (VTI)

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Friday 21 October, 2005

Virotec Intl Ld

Update on I-99 Project in USA

Virotec International Ld
21 October 2005

                            VIROTEC INTERNATIONAL LTD

21 October 2005

                      UPDATE - I-99 Project, Pennsylvania

The Directors of Virotec International Ltd (Virotec) (ASX/AIM: VTI) provide the
following update to shareholders on the Interstate 99 project located at Skytop
Mountain, Pennsylvania.

The Company was asked by its client, the Pennsylvania Department of Transport,
to present a progress report on 20 October on the status of the project. The
Company believes that the results to date are very encouraging however cautions
that whilst the treatment is in the early stages it is not possible to draw a
final conclusion on the success of the treatment.

The results presented to the meeting show:-

- Well MW-46S at buttress/bifurcation shows most significant sign of treatment 
  (pH up from 2.3 to 6.5)
- Titratable acidity in wells MW-17 and MW-19 indicates treatment
- Water leaving limestone blanket was acidic prior to August 15, now alkaline
- Chemical analyses of water in monitoring wells shows decreasing iron
  and aluminum

Virotec has also been involved in the pilot test treatment of a sedimentation
pond. The results of the treatment to date for this pond show:-

- Water that contacts the ViroMineTM reagent is treated.
- Iron concentrations decline by 90%
- pH increases from 3.8 to 7.2
- Sludge production is effectively eliminated
- The original engineering did not assure consistent effective contact with 
  contaminated water.
- Improved engineering will achieve discharge limits, eliminate requirement 
  for caustic treatment, and reduce need for sludge removal.

A copy of the presentation will be available on the Company's website at
www.virotec.com.

If you require further information please contact Virotec, on telephone +617
5530 8014, by email to mail@virotec.com or visit our website at www.virotec.com.

                                        
                            Virotec International Ltd
                               ABN 81 004 801 398
                                   PO Box 188
                            Sanctaury Cove QLD 4212
                                    Australia
                                www.virotec.com
                                        
                                        
                                        


                      This information is provided by RNS
            The company news service from the London Stock Exchange