![]() All local ventilation devices are designed to address one or more of three primary goals: ▪ to protect the user from inhaling toxic gases ▪ to protect the product or experiment ▪ to protect the environment. All these devices address the need to control airborne hazards or irritants that are typically generated or released within the local ventilation device. An implement consisting of a net on a frame, used for gathering shellfish. Nautical A boat or barge equipped with a dredge. CONTROL and EQUIPMENT followed by the hierarchical display of narrower. Other related types of local ventilation devices include: clean benches, biosafety cabinets, glove boxes and snorkel exhausts. Any of various machines equipped with scooping or suction devices and used to deepen harbors and waterways and in underwater mining. need parenthetical definition and in non-desciptors resolved by inversion i.e. The principle is the same for both types: air is drawn in from the front side of the cabinet, and either expelled outside the building or made safe through filtration and fed back into the room. Nonpareils: a decorative confectionery of tiny balls made with sugar and starch, traditionally an opaque white but now available in many colors. an apparatus usually in the form of an oblong iron frame with an attached bag net used. Two main types exist, ducted and recirculating. Learn the meaning of phrasal verbs starting with dredge. ![]() A fume hood is typically a large piece of equipment enclosing five sides of a work area, the bottom of which is most commonly located at a standing work height. Fume hood A fume hood or fume cupboard is a type of local ventilation device that is designed to limit exposure to hazardous or toxic fumes, vapors or dusts. ![]()
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