Aberdeen Foam 2% HI-EX

2% High Expansion Foam (HI-EX)

A versatile, high quality High Expansion Foam concentrate for use with both medium and high expansion foam equipment using potable (fresh) water or seawater.

Used at a concentration of 2%, Aberdeen 2% HI-EX produces very stable foams for control of Class A and Class B fires in confined spaces.

Quickly extinguishes and secures Class A fires of material such as paper, wood and tyres and Class B hydrocarbon fires of liquids such as crude oil, gasoline, aviation kerosene and fuel oil.

Fire Performance Approvals

Aberdeen Foam 2% HI-EX concentrate is accredited to International Foam Standard:

  • EN 1568: 2008 Parts 1&2 - potable (fresh) water and seawater
  • IMO MSC.1/Circ 1312

For further information or to request a copy of our certificates, please contact us.

Environmental Impact

  • Biodegradable - fully biodegradable in 28 days
  • Fluorine free
  • Not classified as hazardous to the environment


Aberdeen Foam 2% HI-EX produces a very stable foam for combating Class A and Class B fires.

Provides three dimensional fire control and ideal for use in the total flooding of confined areas, such as:

  • Cellars and basements
  • LNG tank storage bunds
  • Aircraft hangar systems
  • Machinery rooms and voids
  • Ship holds and engine rooms
  • Warehouses

With medium expansion foam equipment, Aberdeen Foam 2% HI-EX offers advantages over Low Expansion Foams in the control of cryogenic flammable liquid fires or as a vapour suppression foam on toxic liquid spills.

Formulated for use with either fresh or seawater.

Suitable for use in both tropical and cold climates, with maximum and minimum storage and use temperatures of 50°C and -10°C.

Not suitable for use on fuels which are polar solvents and water miscible such as alcohols, ketones, aldehydes and ethers, or for the control of pooled liquid fires in the open.

Also suitable for use for training purposes.

Proportioning Information

Aberdeen Foam 2% HI-EX foam concentrate is intended for use at 2% (2 parts foam concentrate to 98 parts water).

Designed for use with:

  • Medium expansion foam equipment
  • High expansion foam equipment

Physical properties: concentrate


Clear yellow liquid

Specific gravity


pH @ 20°C


Viscosity @ 20°C (mPa.s)


Viscosity @ 0°C (mPa.s)


Surface tension @ 20°C (2% solution) (mN/m)


Freezing point (°C)


Lowest use temp. (°C)


Max. storage temp. (°C)


Min. storage temp. (°C)


Freeze/thaw effect


HIGH EXPANSION: Expansion ratio*


HIGH EXPANSION: 25% drainage (min.)*


HIGH EXPANSION: 50% drainage (min.)*


MEDIUM EXPANSION: Expansion ratio*


MEDIUM EXPANSION: 25% drainage (min.)*


LOW EXPANSION: Expansion ratio*


LOW EXPANSION: 25% drainage (min.)*


* Foam quality will depend on the foam equipment used and the operating conditions. The above are tested in accordance with UK Defence Standard 42-40.



Additional Information

For additional information on fire fighting foam concentrates including C6 foams, foam testing, compatibility, shelf life and pack sizes, please refer to our FAQs section.

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EN1568 12 IMO Fluorine Free