Scale Corrosion Inhibitor


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WTP H875B is an all organic scale and corrosion inhibitor. A blend of phosphonate, and polymers incorporating dispersants. It is designed for the prevention of hardness deposition in recirculating or once through cooling systems using moderate to high hardness make-up water.

WTPH875B is halogen stable and can be used with oxidising biocide programmes. The product retards metal oxide formation, and passivates precipitation zones by dispersion.

Low effective dosage makes WTPH875B economical for large water users.

Product Data

Physical state Pale yellow liquid
Specific gravity (sg) @ 15oC 1.18
pH of 1% solution >8-9

Dosing and Testing

  • Dependant on level of hardness contamination. However, an average dosage would expect to maintain 100 to 150 ppm of WTP H875B within system for hardness levels up to 800 ppm.
  • A simple phosphonate drop test can be utilized to determine system reserves.
  • Standard Phosphonate test x 20 = Inhibitor reserve as product.


Please refer to material safety data sheet for detailed handling/storage instructions.

  • Avoid contact with eyes, skin 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.


WTPH875B treatments are shipped in 25 litre non-returnable drums.


Field Representatives will work closely with customer personnel to assure the effective application of the water treatment programme. Regular service calls can be provided by qualified personnel.  

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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