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The first known modern "fume cupboard" design with rising sashes was introduced at the University of Leeds in 1923. [3] 13 years later, Labconco, now a prominent fume hood manufacturer, developed the first fume hood for commercial sale, reminiscent of modern designs with a front-facing sash window. Soon after, in 1943 during World War II, John ...
A biosafety cabinet (BSC)—also called a biological safety cabinet or microbiological safety cabinet—is an enclosed, ventilated laboratory workspace for safely working with materials contaminated with (or potentially contaminated with) pathogens requiring a defined biosafety level.
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.
Despite their similar appearance, a laminar flow cabinet should not to be confused with a fume hood. A laminar flow cabinet blows unfiltered exhaust air towards the worker and is not safe for work with pathogenic agents, [2]: 13 [3] while a fume hood maintains negative pressure with constant exhaust to protect the user, but does not protect the ...
In a chemistry laboratory a solvent cabinet is a chemical storage cabinet or cupboard which is properly labeled and equipped, for the storage of solvents (especially those that are combustible). A solvent cabinet should be positioned separately from acid cabinet or base cabinet (used for storing acids and caustic bases respectively, as solvents ...
"It was a group of 50 and 7 stayed behind and 43 bolted out the door." ... Last year in Pennsylvania, dozens of lab monkeys escaped after a truck carrying 100 of the animals crashed.
The Director's, the incubator, and the electrical room are glazed to the ceiling; the others are separated by screens or cupboards, seven feet high, and the corridor is formed in the same way. There is consequently through ventilation for the whole floor. The fume chamber is placed in the corridor, and ventilates into the main flue.
The measuring pan of an analytical balance (0.1 mg resolution or better) is inside a transparent enclosure with doors so that dust does not collect and so any air currents in the room do not affect the balance's operation. This enclosure is often called a draft shield.