Tridol C6 S1

1% Aqueous Film-Forming Foam (AFFF)

TridolC6 S1 is a superior quality synthetic Aqueous Film-Forming Foam (AFFF) concentrate for extinguishing and securing flammable hydrocarbon liquid fires.

TridolC6 S1 is a unique combination of hydrocarbon and fluorochemical surface active agents. It produces a vapour-sealing aqueous film that spreads rapidly over the fuel surface to provide rapid control and extinguishment.

  • Film-forming for fast flame knockdown and extinguishment
  • Stable foam blanket provides burnback resistance and post-fire security
  • Foam blanket reseals when ruptured by personnel or equipment
  • Suitable for use with fresh or sea water

Performance Approvals

  • TridolC6 S1 is independently tested and certified to EN1568:2008 part 3.
  • Performance exceeds ICAO Level B fire performance and is certified to this performance level.

  • TridolC6 S1 is audited and approved to Underwriters Laboratories UL162 (7th Edition). 


TridolC6 S1 is used in high risk situations where hydrocarbons (such as crude oil, gasoline, diesel fuel and aviation kerosene) are stored, processed, or transported. It is used extensively on Rapid Intervention Vehicles (RIV) where fast extinguishment with limited quantities of foam is essential for saving life.

Other applications include hydrocarbon storage tanks, process areas, warehouses, power stations and offshore platforms.

TridolC6 S1 provides a vapour suppressing foam blanket on unignited hydrocarbon spills


TridolC6 S1 is intended for use at 1% (1 part concentrate to 99 parts water).

TridolC6 S1 is readily proportioned using conventional foam proportioning equipment.

TridolC6 S1 can be used with air aspirating discharge devices and non-aspirating. Devices include low expansion branchpipes, monitors, top pourers, rimseal pourers, as well as water and foam sprinklers. TridolC6 S1 is also suitable for base injection or subsurface application systems.

Non-aspirated foam is suitable for shallow fuel fires and spill fires. Where a major fuel fire is involved, we always recommend the use of aspirated foam where a stable foam blanket is essential.

Physical Properties 


Amber Liquid

Specific gravity @ 20°C

1.02 - 1.06

pH @ 20°C

6.6 - 7.6

Viscosity @ 20°C (mm2 sec1)


Max. continuous storage temp. (°C)


Max. intermittent storage temp. (°C)


Freezing point (°C)


Effect of freeze / thaw

No loss of performance

UL lowest use temperature (°C)


Expansion ratio*


25% Drainage Time*

≥2 minutes 40 seconds

 * Foam generated using the U.K. Defence Standard DEF42-40 5 lpm branchpipe at 7 Bar pressure. Foam collected in a 1630 ml N.F.P.A. drainage pan.


TridolC6 S1 is suitable for use in combination with:

  • Soft or hard, fresh, brackish or sea water.
  • Dry powder extinguishing agents either separately or as twin agent systems due to the C6 content.
  • Expanded protein-based or synthetic foams for application to a fire in sequence or simultaneously.


TridolC6 S1 is exceptionally stable in long-term storage. A shelf-life of at least ten years can be expected if it is stored properly.

Product Quality

TridolC6 S1 production is closely controlled and is audited by UL in accordance with their approval system.

Angus Fire operates a quality management system which complies with the requirements of BS EN ISO 9001.

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UL listed UL 162 EN1568 ICAO LevelB