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Chemguard 3% FFFP (Part No. CP4302) is a film forming fluoroprotein foam concentrate (FFFP) containing hydrolysed protein and preservatives, together with a blend of fluorinated surfactants to achieve the maximum synergistic effect. The blend of fluorochemicals selected is effective in reducing the surface tension of water as well as the interfacial tension between water and oil sufficiently low to give stable film on the surface of the fuel and as a result it gives fire extinguishing rates superior to those obtained with synthetic based compounds. Incorporation of protein in the formulation produces a thick visible blanket which has exceptional burnback resistance. Chemguard CP4302 should be used as a 3% proportioned solution in fresh or sea water. The correct proportioning or mixture ratio is 3 parts of concentrate and 97 parts of water.


Chemguard CP4302 is intended for use on B class hydrocarbon fuel fires such as oil, petroleum and aviation fuels. Chemguard CP4302 can be applied directly onto the fire surface and is also suitable for subsurface injection. It is compatible with all dry powders and can be used in dry powder/foam twin agent systems.


Chemguard CP4302 can easily be proportioned at the correct dilution using conventional equipment such as:

  • Inline inductors.
  • Balanced pressure, variable flow proportioning systems.
  • Bladder tanks.
  • Around the pump proportioning systems.
  • Water turbine driven foam proportioners.
  • Self - inducting branch pipes and nozzles.


The fire performance of Chemguard CP4302 is measured against standards such as United Kingdom Ministry of Defence Standard 42-40 at 3% concentration The expansion will vary depending on the performance characteristics of the equipment used. When tested to DEF 42-40 at 3% concentration, the expansion will be at least 7:1 (normally 8:1) with a 25% drainage time of not less than 3.5 minutes (normally 4.5 minutes).


  • EN 1568 part 3, Class 1/A


Stored in original unbroken packaging the product will have a long shelf life. The recommended storage temperature range of Chemguard CP4302 is from –15°C to 49°C and shelf life in excess of 5 years will be found in temperate climates. As with all protein based materials, shelf life will be dependant on storage temperatures and conditions. If the product is frozen during storage or transportation, thawing will render the product completely usable. Chemguard CP4302 may be stored in plastic or metal containers. For bulk storage, mild steel tanks may be used provided the internal surface is coated with a protective coating such as bitumen. The use of galvanised material should be avoided for storage vessels and pipe work involving the concentrate.


Appearance Dark brown Liquid
Specific gravity @ 20°C Minimum 1,17 +/- 0,01g/ml
Viscosity approx @ 20°C < 20 cSt
pH 7.5 +/- 1.0
Freezing point - 17°C
Pour point - 15°C
Suspended sediment (v/v) Less than 0.25%
Surface tension (dynes/cm) 18.0 approx
Interfacial Tension < 4 mN/m


Part No. Container Weight


6.6 Gal (25L)

67 lbs


55 Gal (208L)

550 lbs