Sulphite Oxygen Scavenger


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WTP SS1095 is a convenient to use solid oxygen scavenger recommended for the complete removal of oxygen from deaerator heaters, feedwater storage areas, feedwater lines, condensate return lines, boiler internals and closed recirculating water systems.


Physical State White solid


18 ppm of WTP SS1095 is required for each ppm of dissolved oxygen, plus an excess residual for testing purposes.

Dose per M3 feed = (18 x ppm oxygen) + (________35__________)

Boiler  concentration factor

This formula will give 30 ppm sulphite as Na2SO3  

Where feed temp = 80 0C     then ppm oxygen = 2.9 ppm

If feed temperatures are below 80 0C then consider using a Water Treatment Products Ltd formulated tannin product.


WTP SS1095 solid may be fed directly from the shipping container or diluted with clean condensate in a chemical mix tank. It is compatible with most boiler chemical additives except filming amines. Minimum agitation is suggested to prevent premature activation of the oxygen scavenger with oxygen (air) captured by mechanical action at the solution interface. Covered mix tanks or floating plastic plugs are desirable.


WTP SS1095 is controlled by maintaining a fixed sulphite excess of not less than 30 ppm in boilers or 3 ppm in feedwater lines, as detectable sulphite using a reagent dropper method or standard titration technique. Test kits are available from Water Treatment Products Ltd.


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

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


WTP SS1095 treatments are shipped in 6 kg non-returnable HDPE jars.


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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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