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Corrosion Inhibitor for Closed Heating & Chilled Systems

Corrosion Inhibitor for Closed Heating & Chilled Systems

Accepta 0025 is a high performance liquid corrosion inhibitor based on a blend of nitrite and borate that has been scientifically formulated for the treatment of closed re-circulating heating and chilled water systems.

Accepta 0025 is based on a nitrite borate blend, which is suitably buffered to ensure stable pH conditions throughout the water systems.   

Accepta 0025 creates a protective film which is maintained on all metal surfaces. This protective film is kept in constant repair providing the recommended treatment reserve of Accepta 0025 is present in the system water at all times.

Accepta 0025 is suitable for use with both ferrous and non-ferrous metals.

Product Benefits

  • High performance corrosion inhibitor formulated for use in closed re-circulating heating and chilled water systems.
  • Buffered to maintain the required pH value.
  • Non-foaming.
  • Can be used with ferrous and non-ferrous metals.
  • Easy to use liquid.
  • Suitable for LPHW and chilled water systems.

Product Properties

Form: Liquid
Colour: Pale straw
Odour: Odourless
pH: 10.0 - 12.0
Water solubility: Miscible
Relative density: 1.125 - 1.175

*Full details of the product properties are available in the Safety Data Sheet. See below.

Application & Dosage Information

Accepta 0025 can be introduced to the system by pump to a suitable dosing point, dosage pot or via the system header tank.

The system should be cleaned and passivated prior to the introduction of product to minimise the risk of blockages and the potential for under deposit corrosion.

Providing there is no loss of water from the system, only occasional make-up doses are normally required to ensure continuing protection to the system. If make-up water is necessary, this should be dosed at the same treatment level as the initial dose immediately.

It is always advisable to carry out a 'Control Of Substances Hazardous to Health' (COSHH) assessment before use.


The normal dosage rate for Accepta 0025 will produce a system reserve of 1250ppm nitrite with a pH greater than 8.3 for most make-up waters.

Where the make-up water has high chloride levels e.g. brackish water, then the normal dose rate should be doubled.

A simple test method is available for checking the concentration of inhibitor present.

Safety, Storage & Handling

For full details concerning safety precautions, storage and handling procedures for Accepta 0025 please refer to the latest Safety Data Sheet. To download the latest safety data for this product use the following link:

Safety Data for Accepta 0025

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