Product information

This product supersedes product no: 571299

NALFLEET™ Hardness Treatment 7208™ is an Alkaline Liquid phosphate liquid with a Na:PO4 ratio of 2.6:1 that can be used in both coordinated and alkaline phosphate boiler water treatment programmes.


  • Liquid product for easy application
  • Simple test kit is available


  • Provides phosphate scale control in both high and low pressure boilers
  • May be used as part of a coordinated phosphate programme
  • Easy to apply liquid formulation


Safety Data Sheet (SDS)


Directions for use

NALFLEET™ Hardness Treatment 7208 should be fed continuously in order to properly protect the boiler. NALFLEET™ Hardness Treatment 7208 can be fed neat or in any convenient dilution made up in soft water or cooled condensate. NALFLEET™ Hardness Treatment 7208 must not be mixed with oxygen scavengers or condensate system corrosion inhibitors.

Sampling and Testing
NALFLEET™ Hardness Treatment 7208 is normally used in conjunction with NALFLEET™ Alkalinity Control treatment in a conventional alkaline phosphate treatment programme for HP boilers, where independent control of phosphate and alkalinity control is required.

Dosing and Control
The dosage of NALFLEET™ Hardness Treatment 7208 depends on a number of operational factors such as feed-water quality, boiler design and steam rate. Control of NALFLEET™ Hardness Treatment 7208 is by a simple test to give the required level of phosphate (as PO4) in the boiler water. A simple Hardness Treatment test kit is available for this purpose. NOTE: Dependent on water quality, NALFLEET™ Hardness Treatment 7208 dosed at 0.25 liters/ton will increase the phosphate reserve by the order of 10mg/l.