Technology Deep Dive
The science that
kills the fire
at its source
Traditional extinguishers fight fire by removing one corner of the fire triangle. The Fire Safety Stick goes further — it adds a fourth dimension, using potassium ion aerosol chemistry to chemically interrupt combustion at a molecular level. Faster. Cleaner. More effective across every fire class.
No Powder — No Residue Not Pressurised Non-Toxic 5 Fire Classes UKCA & CE Certified
UKCA & CE Certified
Potassium Ion Aerosol Technology
Zero Residue After Discharge
Not Pressurised — No Explosion Risk
15 Years Maintenance Free
The Problem Traditional extinguishers
Traditional extinguishers
create their own damage
Most fire extinguishers were designed decades ago. They fight fire — but the methods they use cause significant collateral damage of their own.
Corrosive Powder Residue
Dry powder extinguishers discharge a fine chemical cloud that settles on every surface it contacts — electronics, engine components, food preparation areas, upholstery and machinery.
"The dry powder residue is highly corrosive. In many cases it causes more damage to sensitive equipment, engines and interiors than the fire itself."
Costly Maintenance & Short Lifespan
Conventional extinguishers require annual servicing, pressure checks and certification tags. Most have a practical lifespan of 4–5 years before requiring refill or replacement — a continuous overhead.
"Annual inspection, five-year refills, replacement cylinders. The ongoing cost of conventional fire safety is routinely overlooked."
Impaired Visibility & Toxicity
Once activated, powder extinguishers fill the room with an opaque cloud that severely impairs vision, disorients occupants and can cause respiratory distress — especially dangerous in enclosed spaces and around animals.
"The chemicals discharged by powder extinguishers are toxic and disorienting. Getting out of a powder-filled room quickly becomes the secondary problem."
The Science Beyond the fire triangle —
Beyond the fire triangle —
the fourth dimension
The Traditional Fire Triangle
Heat
Fuel
Oxygen
Traditional extinguishers remove one side
(foam = oxygen, water = heat)
(foam = oxygen, water = heat)
↓
The Fire Safety Stick: Fire Tetrahedron
Heat
Fuel
Chain Reaction
Oxygen
K⁺ ions chemically interrupt the chain reaction —
the fire extinguishes itself
the fire extinguishes itself
Every fire requires three components: heat, fuel and oxygen. This is the classic fire triangle — and most extinguishers work by removing one of those three sides. Foam removes oxygen access. Water removes heat. CO₂ displaces oxygen.
This approach works, but it is reactive and physical. It requires the extinguishing agent to overwhelm the fire before the fire can overcome it.
The Fire Safety Stick introduces a fourth dimension — the combustion chain reaction. Fire is not simply three elements in contact. It is an ongoing, self-sustaining chemical chain reaction between free radicals produced by combustion. Interrupt that chain reaction and the fire cannot sustain itself regardless of the presence of heat, fuel and oxygen.
This is the principle of chemical inhibition — and it is what the Fire Safety Stick's potassium ion aerosol technology is designed to do at a molecular level.
Why This Matters
Chemical inhibition is faster and more complete than physical suppression. The potassium ions intercept combustion free radicals throughout the fire's volume — not just at the surface. This is why the Fire Safety Stick is effective across multiple fire classes with a single, compact device.
Step by Step From activation to
From activation to
fire out — in seconds
The Fire Safety Stick contains no gas and is not pressurised. The aerosol jet is produced only when the device is activated — a stable solid compound that transforms on contact with combustion.
Step 01
Activation
Strike the base of the Fire Safety Stick to activate it. No pin, no hose, no pressure gauge. The solid potassium nitrate compound inside begins to react instantly.
Step 02
Aerosol Generation
The KNO₃ compound undergoes rapid oxidation, transitioning from solid to aerosol in milliseconds. Free potassium ions (K⁺) and inert nitrogen gas are released in a controlled, thrust-free jet.
Step 03
Chain Reaction Interrupted
K⁺ ions capture the oxygen free radicals produced by the combustion chain reaction. Without free radicals to sustain it, the chain reaction collapses — the fire cannot continue regardless of available fuel.
Step 04
Fire Out. Zero Residue.
Combustion ceases. What remains: microscopic K⁺ particles (3–4 microns, invisible, heavier than air), inert nitrogen (already 78% of the air we breathe) and minimal water vapour. Nothing else.
The Chemistry What actually happens
What actually happens
inside the device
The Fire Safety Stick contains a stable solid compound composed of Potassium Nitrate (KNO₃), an organic oxidiser and a plasticiser resin. This compound is chemically inert at room temperature and requires no pressurisation to store safely.
When activated, the KNO₃ undergoes a rapid decomposition reaction inside the body of the device. This produces a controlled aerosol made up primarily of free potassium radicals (K⁺) and nitrogen gas.
The K⁺ radicals possess strong inhibitor qualities due to their weak ionisation energies. They are highly reactive with the combustion free radicals that sustain a fire — intercepting and neutralising them before they can propagate the chain reaction further.
Potassium has long been known to fire scientists as one of the most effective chemical inhibitors of combustion. The Fire Safety Stick's technology harnesses this property in a compact, deployable, maintenance-free format for the first time.
The Decomposition Reaction
2 KNO₃ → 2 KNO₂ + O₂ K⁺ ions released into aerosol state K⁺ + OH• (combustion radical) → KOH Chain reaction neutralised → fire extinguishes What Is Discharged to the Atmosphere
After the Fire Safety Stick has extinguished a fire, only three things are released — all environmentally benign:
Potassium Particles (Solid)
Microscopic K⁺ particles between 3–4 microns in size — invisible to the naked eye. Heavier than air, they settle on the ground in imperceptible amounts and biodegrade naturally over time.
Environmentally Safe Nitrogen Gas
Inert nitrogen already makes up approximately 78% of the air we breathe. The additional nitrogen released by the Fire Safety Stick is entirely harmless and undetectable in a ventilated space.
Already in the Air Trace Water Vapour
An extremely minimal amount of water vapour produced as a result of the combustion process itself. Non-conductive. Non-toxic. Imperceptible. No damage to electronics or sensitive components.
Non-Conductive See It In Action Watch the technology
Watch the technology
perform under fire
Fire Safety Stick — Aerosol Inhibition Technology demonstration
How to Use It Technique makes the
Technique makes the
difference
The Fire Safety Stick discharges a gas — not a powder or liquid. The technique for using a gas extinguisher differs from traditional methods. Understanding the principles makes it significantly more effective.
The goal is to create a cloud of containment around the fire. The aerosol gas is heavier than air and will fill voids and enclosed spaces, making it especially powerful in areas like engine bays, enclosed machinery and tight spaces where direct contact is difficult.
The long discharge time — up to 100 seconds on the commercial version — is a deliberate design advantage. Use it. The extended discharge allows you to progressively close the cloud around the fire source rather than rushing the process.
✓ Do
→ Approach from a moderate distance, progressively moving closer
→ Move the FSS slowly in a circular motion, directing towards the fire's centre
→ Take advantage of the full discharge time
→ Direct the cloud into enclosed voids (engine bays, cavities)
✗ Don't
→ Get too close immediately — prevents a cloud from forming
→ Move the extinguisher rapidly — disperses the gas before it can work
→ Rush the process — slow and controlled is always more effective
→ Stop early — allow the full cloud to saturate the fire zone
Engine Bays & Enclosed Spaces
Tight areas with cavities and pockets bring out the full strength of the Fire Safety Stick. The gas is heavier than air and will fill every void not directly accessible — both extinguishing the fire and preventing re-flash.
Cooking & Pan Fires
In an isolated pan situation, being too close will chase the flames around the pan. Approach from above and slightly to the side at moderate distance, allowing the cloud to settle over the pan and cut off the oxygen supply to the burning oil.
Electrical Equipment
Non-conductive to 100,000 volts. The aerosol is safe to discharge directly at electrical equipment without risk to the operator. The gas fills the unit voids, suppressing internal fires that a powder extinguisher would mask without extinguishing.
Outdoor & Open Spaces
In open or well-ventilated environments, get closer to the fire source and use a tighter circular motion to concentrate the cloud directly over the burning material. Reducing the distance compensates for gas dispersal in moving air.
Fire Classifications One device. Every
One device. Every
major fire class covered.
Most traditional extinguishers are rated for one or two fire classes. The Fire Safety Stick covers all five — in a single compact device that weighs 215g and never needs servicing.
Class A
Solid Combustibles
Wood, paper, fabric, cardboard, plastics
Homes · Caravans · Offices
Class B
Flammable Liquids
Petrol, diesel, oil, solvents, fuels
Cars · Boats · Workshops
Class C
Flammable Gases
LPG, natural gas, propane, butane
Catering · Heating · Industry
Class E
Electrical Equipment
Live electrical fires, switchgear, motors, EVs
100,000 Volts Rated
Class F
Cooking Oils & Fats
Deep fat fryers, chip pans, wok stations
Kitchens · Catering · Restaurants
The science is proven.
The question is where yours is.
The Fire Safety Stick is available in 50-second and 100-second versions — compact enough for a car glove box, powerful enough for a commercial kitchen or engine bay.
Shop the Fire Safety Stick → Speak to the Team