In a typical fire, unstable free radicals and atoms interact intensively with oxygen, driving the chain reactions that sustain combustion until the fuel is consumed. FirePro (FP) technology interrupts this process at the molecular level, suppressing fire by directly inhibiting the chemical chain reactions of combustion.

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When an FP unit activates, its patented FPC compound transforms into a rapidly expanding condensed aerosol. This aerosol is primarily composed of potassium carbonate (K₂CO₃), water vapor (H₂O), nitrogen (N₂), and carbon dioxide (CO₂). Thanks to its gas-like, three-dimensional properties, the aerosol disperses evenly throughout the protected volume and flows naturally with the convection currents of the fire.

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The aerosol contains micron-sized particles of potassium salts, suspended in inert gases. Their high surface-to-mass ratio significantly enhances extinguishing efficiency, meaning less agent is required compared to traditional systems. Upon contact with the flame, potassium radicals (K*) are released through the dissociation of K₂CO₃. These radicals bond with flame free radicals such as hydroxyls (OH-), producing stable compounds like potassium hydroxide (KOH). This effectively terminates the combustion process without reducing ambient oxygen levels, ensuring safety for people and equipment.

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Furthermore, KOH reacts in the presence of CO₂ to regenerate K₂CO₃, reinforcing the extinguishing cycle. The resulting potassium carbonate particles, each less than five microns in diameter, remain suspended in the atmosphere of the protected enclosure for at least 30 minutes. This creates a stable, fire-inhibiting environment that prevents re-ignition, delivering reliable and sustained protection against even the most challenging fire scenarios.