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A fume hood (sometimes called a fume cupboard or fume closet) is a type of local exhaust ventilation device that is designed to prevent users from being exposed to hazardous fumes, vapors, and dusts.
Fume hoods were introduced about 100 years ago to safeguard personnel working with hazardous materials. While many changes and improvements have been made, the basic concept and design of fume hoods remains the same. Air is drawn from the workplace, around the worker and into the front of the hood, and is then exhausted out of the laboratory.
A kitchen hood in a small apartment. A kitchen hood, exhaust hood, hood fan, extractor hood, or range hood is a device containing a mechanical fan that hangs above the stove or cooktop in the kitchen. It removes airborne grease, combustion products, fumes, smoke, heat, and steam from the air by evacuation of the air and filtration. [1]
[3]: 13 [4] Neither are most BSCs safe for use as fume hoods. [2] Likewise, a fume hood fails to provide the environmental protection that HEPA filtration in a BSC would provide. [5] However, most classes of BSCs have a secondary purpose to maintain the sterility of materials inside (the "product").
Smoke hoods are a class of emergency breathing apparatus intended to protect victims of fire from the effects of smoke inhalation. [2] [3] [4] A smoke hood is a predecessor to the gas mask. [5] The first modern smoke hood design was by Garrett Morgan and patented in 1912. [6]
WASHINGTON (Reuters) -U.S. President Donald Trump said on Tuesday the United Nations has "great potential" but has to "get their act together," as he stopped U.S. engagement with the U.N. Human ...