TYPE OF MACHINERY: The chemical hood has been designed and built to allow manipulation of various materials in a sterile environment. The type of ventilation system is designed to provide protection to personnel from toxic fumes, vapors and dust. SECTOR OF USE: Pharmaceutical, chemical, cosmetic, food, dietary, medical devices. PECULIARITIES: The laboratory exhaust fume hood generally consists of a closed cabin equipped with an opening front screen in which manipulations and treatments are carried out which generate a diffusion of toxic vapours; they are a fundamental tool for protecting the operator in the laboratory from the risk of inhaling volatile chemical substances harmful to health. Furthermore, full extraction hoods, with their ducting for exhausted air outside, are the most conventional and safe solution. They consist of a separate furnishing structure (the hood) and an air extraction system (a remote/external motor and ducting). In these hoods, the air that enters through the front opening; guarantees sufficient depression to prevent any leakage of the toxic substances used. So as to remove the contaminant present in the hood.