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silver stabilised hydrogen peroxide

Geosil50 achieves 99.999% reduction in 60 mins

The Geosil50 Instructions for Use are supported by a new UKAS Laboratory report showing a 99.999% reduction in the Legionella viable count @1000ppm in just 60 minutes.

This is significantly better than:
  • Huwa-San – 2000ppm for 60 mins to achieve a 4.8 log reduction
  • Sanosil – 1000ppm for 4 hours
  • Endosan – 400ppm for 12 hours

Competitive performance data from currently published sources.

why is UK REACH/GB BPR Authorisation important?

The existing EU Biocidal Products Regulation (EU BPR) has been copied into GB law. The new regime – the GB Biocidal Products Regulation (GB BPR) came into force at 11pm on 31 December 2020.
Now that the UK has left the EU, the Geosil family of products automatically complies with the GB Biocidal Products Regulation (GB BPR).
Geosil50’s rigorous testing met the stringent criteria of the European Chemical Association standards. UKAS laboratory accredited analysis shows that Geosil50 is effective in eradicating Legionella from infected Hot & Cold Water Systems.

Our clients have peace of mind knowing that they are using a product which meets the highest standards of compliance. The unique combination of GB BPR approval, UKAS laboratory supported Method Statement & secure supply means that Geosil is now the biocide of choice in this market.

Learn more about GB BPR here:

silver ions amplify disinfection rates in hot & cold water systems

Ionic silver stabilises the hydrogen peroxide and kills the microorganism through oxidation, keeping water systems clean and safe.

what do we offer?

we are water treatment professionals

For more than 15 years we have used Geosil50 to eliminate Legionella in complex water systems for a wide range of building services clients, with a wide range of profiles, including hotels, hospitals, office blocks and care homes.
We also have in-depth knowledge of the increasingly stringent rules surrounding the control of Legionella in hot & cold water down-services and this knowledge and expertise is freely available to all our customers

what do our clients say about us?

It has been a pleasure to do business with Zebec Systems who have made switching to Geosil50 very straightforward and the technical support has been invaluable.
Stephen M
managing director, national water treatment company
We wanted a biocide that had GB BPR Authorisation, was supported by a proper Method Statement and was supplied by a reliable manufacturer – Geosil50 meets all our criteria.
Michael H.
Customer Services Manager, Scottish water treatment company
Support from Zebec Systems has been excellent, including training, documentation and prompt delivery after ordering.
Andrew M.
Tecnical director, national water treatment company