when working with cryogens ..0 OCT-Mobile 13:44 loncapa5.chem.binghamton.edu C P
ID: 916714 • Letter: W
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when working with cryogens ..0 OCT-Mobile 13:44 loncapa5.chem.binghamton.edu C Print Info When working with cryogens: FalseIt is OK to add a few drops of water cryogenic liquid to see what happens. Do not use gloves to hold cryogenically cooled objects for long periods, or expose them directly to liquid cryogens, since the hand may be frozen through the glove. Wear appropriate protective goggles and gloves when transferring or working with cryogens. Perform only those activities or demonstrations that have been approved by the laboratory supervisor. Use and store liquid cryogens only in containers approved for such use. Other containers may fracture or even explode. All containers must be properly vented. The cryogenic container must be properly closed and sealed. Use liquid cryogens only in properly ventilated areas. Large amounts of evaporating cryogens can dilute the oxygen concentration to a level where unconsciousness will result. Avoid activities that will promote vigorous boiling and splashing of the liquid, such as immersion of warmer objects.Explanation / Answer
True : do not use gloves to hold cryogenically cooled objects for long period, or expose them directly to liquid cryogens. since the hand may be frozen through the gloves.
True: wear appropriate protective goggles and gloves when transferring and working with cryogens.
True: Perform only those activities or demonstration that have been approved by lab supervisor.
True : use and store liquid cryogen only in container approved for such use. other container may fracture or even explode. all containers must be properly vented.
True: the cryogenic container must be properly closed and sealed.
True: use liquid cryogen only in properly ventilated areas. Large amount of evaporating cryogens can dilute oxygen concentration to a level where unconscionous will result.
True: avoid activities that will promote vigorous boiling and splashing of liquid. such as an immersion of warmer objects.
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