Twin Chain Quaternary Ammonium Compound


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WTP C58 is a broad-spectrum biocide based upon a twin chain quaternary ammonium compound, with activity against both gram positive and gram-negative organisms.


  • Excellent kill rate against a wide range of bacteria including legionella pneumophila
  • Excellent Algaecide and Fungicide
  • Product functions well over a wide pH range of 6.5 to 9.5

Product Data

Physical State Clear solution with slight aromatic odour
Density 0.95 –0.99 gml-1

Treatment and Feeding Requirements

Heavily contaminated systems will require more biocide than a clean system. Draining, flushing, and mechanical cleaning of the cooling tower sump is recommended if biological contamination is severe.

Biocides should be added to the system in shock dosages at a point of good circulation. It is generally recognised that the alternate use of two biocides will control biological contamination better than anyone biocide. Normally alternate use of generically different agents is suggested.


WTP C58 is intended to be shot dosed into the system. It may be dosed into the sump of the cooling tower or evaporative condenser. The system should be cleaned before application of an initial dose of 200 ppm product. Weekly dosing will be required, ensure dip slide results show the system is under control.

WTP C58 addition may vary based on water temperature and seasonal requirements. Your Representative can provide detailed instructions.

Typical WTP C58 dosages for different purposes are:

  • Legionella Efficacy via Modified Suspension Disinfection Test: 1 hour @ 100 ppm
  • Legionella pneumophila Efficacy (CEN/TC 216 WG1N 125): 1 hour @ 200 ppm

All doses should be adjusted to account for system retention times and half-life.


Use biocides safely. Always read the label and product information before use. Please refer to material safety data sheet for detailed handling/storage instructions. 

  • Avoid contact with skin, eyes and clothing.
  • In case of contact, immediately remove contaminated clothing and wash skin with soap and water.
  • For eyes, flush with plenty of water and seek medical attention.
  • Harmful if swallowed.


WTP C58 product is available in 25 litre and 205 litre non returnable 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.

More Information

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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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