Hydrogen Peroxide 11% Solution


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WTP CHP11 is a fast acting non-foaming, non-tainting biocide. The biocide is based on Hydrogen Peroxide and decomposes to form water and oxygen.


WTP CHP11 is a DEFRA Approved product for General Orders.

WTP CHP11 is effective against a wide spectrum of nuisance micro organisms including:

  • Viruses,
  • Aerobic and Anaerobic Bacteria,
  • Bacterial Spores,
  • Mould Yeasts,
  • Fungi and Algae.


WTP CHP11 consists of 11.0% Hydrogen Peroxide.


Based on clean systems containing fresh mains water.

Temperature (ºC)

Contact Time


Min Conc of peroxide


<8 20 3000
8-20 60 1500
20-30 60 1500
30-40 60 1500


WTP CHP11 works best on clean systems and should be considered a final treatment following thorough cleaning.


Hydrogen peroxide drop test kit is available to determine correct levels in the system (WTP TK114).


WTP CHP11 breaks down into water and oxygen.


WTP CHP11 undiluted is a powerful oxidising agent. It is heat sensitive above 60ºC – spontaneous decomposition may occur. Contact with brass, bronze, chromium, copper, iron, lead, manganese, nickel, silver, zinc and other catalytic metal will accelerate decomposition. Contact with concentrated acid, alkalis reducing agents, dirt, ash, rust or metal dust will also cause spontaneous decomposition. Therefore these materials must be absent in transfer pumps and pipework. (Please refer to Material Safety Data Sheets for detailed handling and storage information).


WTP CHP11 treatments are shipped in 25 litre vented drums.


Field Representatives will work closely with customer personnel to assure the effective application of the water treatment programme. Qualified personnel can provide regular service calls.  

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The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The company shall not be held liable for any damage resulting from handling, contact, mis-use or mis-application of the above product. In all instances the user should satisfy themselves that this product is suitable for the anticipated application and should carry out suitable and sufficient risk/COSHH assessments and a method of use statement.

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