Pre-Commission and System Cleaner


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WTPCL21 is a powerful iron and metal cleaning agent based on buffered monoammonium citrate for use in steam boilers, closed circuits or cooling systems.


  • Removes iron oxide and mill scale from metal surfaces
  • Provides excellent results when used in closed circuits


Physical Appearance Pale yellow liquid
pH 3.0 – 4.0
Specific Gravity (SG) 1.05 – 1.15

Dosing and Testing

  • WTPCL21 dosage will depend upon the requirements of each individual system
  • Typically dosage of 2 – 4% system volume will prove effective for pre-commission cleaning applications
  • Once cleaning is complete, WTPCL21 must be completely flushed from the system before dosing with a suitable corrosion inhibitor such as WTPCW25
  • WTPCL21 can be dosed directly from the shipping from or diluted in water in a chemical mixing drum
  • Measurement of the system pH at various points on the system will ensure that the correct chemical balance is maintained


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

  • Avoid direct contact with skin and eyes to prevent irritation.
  • In case of accidental contact, flush area with water, and get medical attention.
  • Product should not be ingested.


WTPCL21 treatments are shipped 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. 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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