Descaling Agent


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WTP Phos40


WTP Phos40 is a descaling cleaning agent based on Phosphoric Acid, for use in steam boilers, closed circuits, calorifiers, plant and process equipment.

WTP Phos40 is excellent for use as a chemical cleaning agent.


Appearance Colourless/Straw liquid
Specific Gravity (SG) 1.250


  • Chemical dosage of WTP Phos40 will depend upon system requirements and the amount of chemical used will be in proportion to scaling.
  • WTP Phos40 can be dosed direct from the shipping drum.
  • WTP Phos40 should only be in contact with metal surfaces for duration of the cleaning process. The cleaning process should be continuously monitored.


Measurement of system pH with a meter (WTPTKC019) can be used to monitor the pH at various points of the system, this will ensure correct chemical balance is maintained. As the pH rises due to the neutralization of the acid by the scale, further product will need to be added until descaling is completed.

Acid descaling kit – WTPTK149 is available to monitor scale removal.


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


WTP Phos40 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. 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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