Tankmaster C6

3% FluoroProtein Foam Concentrate (FP)

TankmasterC6 is a superior quality FluoroProtein (FP) fire fighting foam concentrate for extinguishing and securing flammable hydrocarbon liquid fires.

TankmasterC6 is a powerful and cost effective agent for the protection of a wide range of hydrocarbons including crude oil, regular leaded gasoline and unleaded gasoline.

Its unique formulation is based on advanced protein foam technology. The protein base provides a tough cohesive foam blanket with high resistance to heat that quickly smothers, cools, and seals the risk. Fluorochemical surface active agents combined with the protein base increase the fluidity and fuel repellency of the foam.

  • Stable long-lasting foam blanket for unsurpassed burnback resistance and post-fire security.
  • Highly fluid foam for rapid fire knockdown and extinguishment.
  • Detergent-free for high resistance to fuel pick-up.
  • Excellent sealing action against hot metal surfaces.
  • Foam blanket re-seals when ruptured by personnel or equipment.

Performance Approvals    

  • TankmasterC6 has numerous approvals and UL Listings against Underwriters Laboratories Standard UL 162 (7th Edition) and LASTFIRE.

Environmental Impact  

TankmasterC6 is biodegradable and virtually non-toxic to aquatic organisms. It is based on a natural protein foaming agent and contains no harmful synthetic detergent or glycol ether.


TankmasterC6 is the ideal fire fighting foam to use in situations where hydrocarbon fuels such as crude oil, gasoline, and fuel oils are stored, processed, or transported. Formerly known as FP70 Plus, it is used extensively by major oil and petrochemical companies for hydrocarbon, MTBE and blended unleaded gasoline storage tank fire protection around the world. Other typical applications include process areas, road/rail loading racks, power stations, marine terminals, and airports.

TankmasterC6 provides a vapour suppressing foam blanket on unignited hydrocarbon spills.


TankmasterC6 is intended for use as a 3% solution in water (3 parts concentrate to 97 parts water) at low and medium expansion. 

TankmasterC6 should be used with air aspirating discharge devices such as low expansion branchpipes, monitors, top pourer sets, rimseal foam pourers, and foam/water sprinklers. It also produces top quality medium expansion foam when applied through medium expansion branchpipes and bund pourers.

As with any foam, TankmasterC6 is best applied gently on to the burning liquid surface. However, its exceptional resistance to fuel contamination enables it to withstand vigorous mixing with fuel. This makes it ideal for forceful application on to storage tank fires from ground-based mobile monitors or through base (sub-surface) injection systems.

Physical Properties


Dark brown liquid

Specific gravity 20°C 

1.16 - 1.23 

pH @ 20°C

7.0 - 8.0 

Viscosity @ 20°C (mm2 sec-1)


Max. continuous storage temp. (°C)


Max. intermittent storage temp. (°C)


Freeze/thaw effect

No performance loss

Lowest use temp. (°C)


Sediment as shipped (% v/v)

≤ 0.1

Sediment after ageing (% v/v)

≤ 0.5

Expansion ratio *

≥ 8:1

25% Drainage time *

≥ 8 mins

* 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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UL listed UL 162 LASTFIRE