Fomtec LS EXP is a superior high expansion foam concentrate for use in any High expansion system. It is consisting of hydrocarbon surfactants blended with various solvents and stabilizers. It does not contain any fluorinated surfactants or polymers (PFAS) or other organohalogens. Fomtec LS EXP should be used at 2-3% concentration in fresh or sea water if medium or high expansion foams are required depending on equipment used.
Fomtec LS EXP is a multi-purpose foam which can be used at low, medium and high expansion on class B hydrocarbon fuels such as diesel, gasoline, oil and aviation fuel. Fomtec LS EXP has been tested with use of “inside air” during fire and has shown very high efficiency under such conditions, being able to extinguish both large class A and class B fires. Tests with inside air also showed very good extinguishing capabilities of E85 fuel that consist of 85% Ethanol.
At medium and high expansion, Fomtec LS EXP can be used for total flooding of confined areas with fires involving class A and B materials. Medium expansion is particularly suitable for small areas such as cellars and basements of buildings and high expansion type for large areas such as warehouses, ship cargo or engine rooms. LS EXP has also been tested on LNG fires with satisfactory result as gas suppressant, creating a foam lid on the LNG surface.
| Appearance | Clear yellowish liquid |
| Specific gravity at 20°C | 1,01 +/- 0.01 g/ml |
| Viscosity at 20°C | ≤ 30 mPas |
| pH | 6,5 - 8,5 |
| Freezing point | 7°C |
| Recommended storage temperature | 7 - 55°C |
| Suspended sediment (v/v) | Less than 0,2% |
| Surface tension | ≤ 23,0 dynes/cm |
The fire performance of this product has been measured and documented according to “International Approvals” stated
in this document. The foaming properties are depending on equipment used and other variables such as water and ambient temperatures. Average low expansion 9:1, average ¼ drainage time 9:30 minutes using UNI 86 test nozzle.
Used in Fomtec high expansion generators the average values to the right can be expected:
| Generator | Expansion @ 4bar / @ 6 bar |
| Fomtec Bele L | - / 450:1 |
| Fomtec Bele S 400 | 600:1 / 750:1 |
| Fomtec Bele S 800 | 600:1 / 750:1 |
Stored in original unbroken packaging the product will have a long shelf life. Shelf life in excess of 10 years will be found in temperate climates. As with all foams, shelf life will be dependent on storage temperatures and conditions.
For storage recommendations and material compatibility please refer to our Fomtec Technical Advices FTA 10 addressing the topic.
The Fomtec Enviro range comprises an extensive range of non-PFAS based foams suitable for use Emergency Response missions and System applications. Enviro foam concentrates are available for class A, class B fire hazards and products are avail-able for low, medium, and high expansion discharge devices.
