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Colt4 has the ability to produce a considerable amount of smoke 'off power' using the retained energy within the high mass heat exchanger, allowing an operator to carry a generator from room to room, making smoke as required, without a trailing electrical lead.
In service with numerous fire authorities world-wide, many NATO forces (including the USN and Royal Navy for shipboard training), as well as analytical laboratories, asbestos removal specialists, and HVAC and LEV contractors, the Concept Colt has an enviable reputation for simplicity of operation and reliability. 

The Concept Colt 4 variants are particularly suited to applications where extremely dense concentrations of smoke are required, or large volumes need to be smoke logged. This is because of the very persistent nature of the smoke produced. The Colt 4 Turbo has a larger 2.2kw heat exchanger resulting in almost twice the smoke output - it is one of the most powerful hand held smoke generators available today. 
The resulting smoke from the Colt 4 has a particle size of just 0.2 - 0.3 micron mmd. The smallest particle size in it's class. This compares to typical entertainment smoke systems that have a particle size of **5 microns. This means the Colt 4 doesn't just create the most persistent water based smoke available, it is also the safest.
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