FP350 C6

3% Cost Effective FluoroProtein Foam Concentrate (FP)

FP350C6 is a cost-effective FluoroProtein (FP) fire fighting foam concentrate for extinguishing and securing flammable hydrocarbon liquid fires.

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 superior 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 on hot metal surfaces.
  • Foam blanket re-seals when ruptured by personnel or equipment.
  • Suitable for use with fresh or sea water.

Performance Approvals                      

  •  FP350C6 is independently tested and certified to EN1568:2008 Part 3.
  • Audited and approved to Underwriters Laboratories UL162 (7th Edition).


FP350C6 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. It is used extensively by major world oil and petrochemical companies for hydrocarbon storage tank fire protection. Other typical applications include process areas, road/rail loading racks, power stations, marine terminals and airports.

FP350C6 provides a vapour-suppressing foam blanket on unignited hydrocarbon spills.


FP350C6 is intended for use as a 3% solution in water (3 parts concentrate to 97 parts water) at low expansion. With medium expansion equipment it can also be used at 3%, but for optimal results a 6% induction rate is recommended.

It is readily proportioned using conventional foam proportioning equipment such as portable and fixed in-line foam venturi proportioners, handline nozzles/branchpipes with pick-up tubes, balanced pressure variable flow proportioners, balanced pressure bladder tank proportioners and around-the-pump proportioners.

FP350C6 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 FP350C6 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.

Physical Properties  


Dark brown liquid

Specific gravity @ 20°C

1.13 - 1.17

pH @ 20°C

6.9 - 7.9

Viscosity @ 20°C (mm2 sec1)


Max. continuous storage temp. (°C)


Max. intermittent storage temp. (°C) 


Freezing point (°C)


Freeze/thaw effect

No performance loss

UL lowest use temp. (°C)


Expansion Ratio *

≥ 7:1

25% Drainage Time *

≥ 6 minutes 30 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.


FP350C6 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.
  • Expanded protein-based or synthetic foams for application to a fire in sequence or simultaneously.


FP350C6 foam concentrate is exceptionally stable in long-term storage. A shelf-life of at least ten years can be expected if it is stored properly.


FP350C6 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 EPA 2015 compliant