EHS Management Consultants

  The purpose of this method is to introduce small volumes of the main substance (insecticide) in an efficient manner. The reason for the efficiency of this method is the decrease in the size of the particulate material. This ensures it remains suspended in the space so that it can reach every nook and cranny of the space being treated. The reason the material is required to stay suspended is to ensure maximum penetration. In thermal fogging, this is guaranteed by the construction and operation of the machine. This machine consists of a small pressurized chemical tank, where the dilution of material is placed, a fuel tank, a combustion chamber, an air intake, and a resonator. The most common fuels used are pure oils (petrol, diesel) or aqueous mixtures containing glycol. The fuel along with the air is drawn into the combustion chamber where a spark ignites the mix creating the necessary fumes. The fumes are carried into the resonator, where the velocity of the fumes is increased. At