The fume cupboard (FC), often also named fumehood should protect the users from getting into contact with potential dangerous chemicals (fumes, vapours) and should discharge them outside the building. A first identification of a proper fume cupboard is the availability of a valid certificate (In Europe usually BS EN 14175. Other countries might use their own localized standards (e.g AS/NZS 2243, SEFA 1.2, ANSI/ASHRAE 110).