A Fume Hood
is a ventilated enclosure where hazardous materials can be handled Safely. These fumes are isolated within the hood and are directed away from the operator to avoid inhalation and contact. An Exhaust blower system Pulls air from the lab into the hood. The contaminated air is diluted with room air and either pulled through an exhaust filter system and vented back into the Room (ductless hood) or through duct work and then vented to the outside (ducted Hood).Features:
- Protect the user from inhaling toxic gases (fume hoods, biosafety cabinets, glove boxes);
- Protect the product or experiment (biosafety cabinets, glove boxes);
- Protect the environment (recirculating fume hoods, certain biosafety cabinets, and any other type when fitted with appropriate filters in the exhaust airstream).
- Vapors from chemicals used in the laboratory, even in small amounts, can have long term effects on your health. The TLV(Threshold Limit Value) defines for each chemical the concentration level (expressed as milligrams per cubic meter of air – mg/m3) at which the chemical becomes harmful to your health.
|Carbon Tetrachloride||31 mg/m3||Damages central nervous system and Pulmonary Edema.|
|Acetone||1780 mg/m3||Irritates eyes, noise throat Causes nausea.|
|Nitric Acid||5.2 mg,/m3||Destroys tissue, damages eyes, upper respiratory irritation, dental erosion.|
|Chlorine||1.5 mg/m3||Pulmonary Edema, burning of eyes and nose.|
|Benzene etc||0.3 mg/tn3||Carcinogen, neurological and digestive tract damage.|