One of the most common questions we receive about security fog systems is simple: will the fog leave residue behind?
At Smoke Screen, the answer has always been the same. Our security fog generators produce residue-free fog that leaves no damage to surfaces, equipment, or stored goods after deployment.
This isn’t just a marketing claim. It has been independently tested and verified through scientific analysis.
For businesses across South Africa, where security fog is often used to protect retail stores, warehouses, offices, and logistics facilities, this assurance is critical. Security technology must stop criminals without damaging the environment it protects.
Why Residue-Free Security Fog Matters
Security fog works by rapidly filling a room with dense fog when a break-in occurs. This removes visibility and prevents intruders from locating valuables.
However, some smoke-based security systems can leave particles behind that settle on surfaces or equipment. In environments containing electronics, pharmaceuticals, retail stock, or laboratory equipment, this can be a major concern.
Smoke Screen fog generators are designed to avoid this problem entirely.
Our fog produces an exceptionally small particle size of just 0.2 microns, independently tested and confirmed by the Atomic Energy Authority (Aerosols Division). This particle size places our fog in one of the safest bands for human breathing while also delivering exceptional performance.
The size of the particles plays a crucial role in how the fog behaves during deployment.
What Particle Size Means for Security Fog
Smaller particles create a more effective security fog system in several ways.
First, smaller particles remain suspended in the air for longer periods. Our fog settles at an extremely slow rate of approximately 9 mm per hour, making it one of the most persistent security fogs available. This longer persistence means the fog continues to obscure visibility and prevent criminal activity for extended periods.
Second, smaller particles significantly reduce the risk of contamination. Because the particles remain airborne and disperse cleanly, they do not settle on surfaces or leave visible residue behind.
Third, smaller particles improve efficiency. Our fog generators use less fluid than many competing systems while still delivering effective coverage. Compared with competitors that produce particles around 2 microns, Smoke Screen fog particles are dramatically smaller by volume.
This allows our systems to produce extremely dense fog while maintaining efficient fluid usage and reliable performance.
Independent Laboratory Testing
To confirm our claims of residue-free security fog, independent testing was conducted by Dr. Shen of Molecular Profile Services (MPS).
MPS was evaluating the suitability of security fog systems for use in their laboratories, where contamination control is extremely important. The testing was performed using Atomic Force Microscopy (AFM), a highly sensitive technique used to detect microscopic surface contamination.
It is important to note that these tests were not conducted on behalf of Smoke Screen. They were carried out independently by MPS to determine whether security fog would be safe for their own laboratory environment and equipment.
After analysing the results, Dr. Shen confirmed that the control samples and exposed samples showed no evidence of contamination associated with Smoke Screen fog particles.
The results demonstrated that even at fog concentrations significantly higher than those normally used for security applications, there were no signs of residue or surface contamination.
Proven Protection Without Contamination
These results provide strong evidence that Smoke Screen security fog leaves no residue and causes no damage to protected environments.
For businesses using security fog across South Africa, this reassurance is extremely important. Many environments contain sensitive equipment, valuable stock, or delicate surfaces that must remain protected even after a security incident.
Because Smoke Screen fog disperses cleanly without leaving deposits behind, businesses can return to normal operations quickly once the fog clears.
The system stops intruders without creating additional disruption.
Effective Security Without Compromise
Security technology should protect assets without creating new risks. Smoke Screen systems achieve this by combining powerful crime prevention with safe, residue-free fog technology.
By producing extremely small particles that remain suspended in the air, our systems deliver dense fog coverage while avoiding contamination or surface damage.
This combination of effective crime prevention and clean fog technology makes Smoke Screen security fog generators a trusted solution for businesses protecting property across South Africa.
