April 21, 2026

Physical suppression:

Metal salt particles in the aerosol melt or vaporize at high temperatures, absorbing heat and lowering the flame temperature, which slows down the fire.

Chemical suppression:

Solid particles and metal ions from the aerosol react with active radicals in the flame, cutting down the number of radicals and slowing combustion.

Reducing oxygen concentration:

The aerosol extinguishing process generates inert gases like N₂ and CO₂, which lower oxygen levels in the flame and stop the burning process.

Safe for electrical equipment

Title

When strontium nitrate in S-type aerosol breaks down, it does not take in moisture from the air. This means it won't form conductive or corrosive liquid films, so electrical devices stay protected.

Harmless to humans

Title

 

S-type aerosol gives off mostly N₂, a little CO₂, and solid metal salts—none of which are toxic.

The solid extinguishing agent inside rapidly releases micron-sized particles into the air, forming a dense cloud.

These particles capture free radicals generated during combustion — the "fuel" that sustains a flame — thereby chemically blocking the spread of thermal runaway.

At the same time, the system also lowers the local oxygen concentration, effectively suppressing flame spread.