Scale & Multi-Metal Corrosion Inhibitor for Closed Systems – 2509

This product has been replaced by Accepta 2336


Accepta 2509 is a high performance cooling water scale and multi-metal corrosion inhibitor scientifically formulated to treat and protect closed circuit water systems including central heating systems, engine cooling systems and for system pressure testing.

A technically advanced formulation, Accepta 2509 is compatible with anti-freeze offering high performance multi-metal protection for a range of systems, including central heating systems, engine cooling systems and system pressure testing.

Accepta 2509 contains a pH buffer proven to maintain a range of 6.5 – 7.5, giving the same effective protection to aluminium systems.

NOTE – Accepta 2509 contains nitrite.

Product Benefits

  • High performance scale and corrosion inhibitor
  • Compatible with anti-freeze
  • High performance multi-metal protection
  • Suitable for use in central heating systems
  • Suitable for use in engine cooling systems and system pressure testing
  • Contains a pH buffer maintaining range of 6.5 – 7.5
  • Suitable for aluminium systems
  • No environmental impact

Product Properties

Fprm: Liquid
Colour: Pale orange
Odour: Barely perceptible odour
pH: 7.0 – 7.4
Relative density: 1.12
Solubility in water: Miscible in all proportions

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

Application & Dosage Information


To obtain the best results from Accepta 2509 it is important to ensure the system to be treated is clean, drained and flushed.  If the system is heavily fouled it is advisable to consider thoroughly cleaning the system (Please contact Accepta for advice).

Typical treatment

The general dosing regime is 10 litres of Accepta 2509 per 1000 litres system volume.

The system should be topped up as required based on water losses.

Testing & Control

Test if required to show a minimum of 1000ppm of nitrite within the system.

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

For further technical assistance concerning Accepta 2509 please contact Accepta.

Safety, Storage & Handling

For full details concerning safety precautions, storage and handling procedures for this product please refer to the latest Safety Data Sheet. To request the latest MSDS for this product please fill out the form below.

    Additional information

    Weight 25 kg