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a database of the National Library of M

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Analytical procedures ... should be carried out with care &amp; vaporsevolved during ... procedures should be removed. ... Expert advice shouldbe obtained before existing fume cupboards are used ... &amp; when newfume cupboards are installed. It is desirable that <strong>the</strong>re be means fordecreasing <strong>the</strong> rate <strong>of</strong> air extraction, so that carcinogenic powders can behandled without ... powder being blown around <strong>the</strong> hood. Glove boxes shouldbe kept under negative air pressure. Air changes should be adequate, sothat concn <strong>of</strong> vapors <strong>of</strong> volatile carcinogens will not occur. /ChemicalCarcinogens/ [Montesano, R., H. Bartsch, E.Boyland, G. Della Porta, L.Fishbein, R. A. Griesemer, A.B. Swan, L. Tomatis, and W. Davis (eds.).Handling Chemical Carcinogens in <strong>the</strong> Laboratory: Problems <strong>of</strong> Safety. IARCScientific Publications No. 33. Lyon, France: International Agency forResearch on Cancer, 1979.8]**PEER REVIEWED**PRECAUTIONS FOR "CARCINOGENS": Vertical laminar-flow biological safetycabinets may be used for containment <strong>of</strong> in vitro procedures ... providedthat <strong>the</strong> exhaust air flow is sufficient to provide an inward air flow at<strong>the</strong> face opening <strong>of</strong> <strong>the</strong> cabinet, &amp; contaminated air plenums that areunder positive pressure are leak-tight. Horizontal laminar-flow hoods orsafety cabinets, where filtered air is blown across <strong>the</strong> working areatowards <strong>the</strong> operator, should never be used ... Each cabinet or fumecupboard to be used ... should be tested before work is begun (eg, withfume bomb) &amp; label fixed to it, giving date <strong>of</strong> test &amp; avg air-flowmeasured. This test should be repeated periodically &amp; after anystructural changes. /Chemical Carcinogens/ [Montesano, R., H. Bartsch,E.Boyland, G. Della Porta, L. Fishbein, R. A. Griesemer, A.B. Swan, L.Tomatis, and W. Davis (eds.). Handling Chemical Carcinogens in <strong>the</strong>Laboratory: Problems <strong>of</strong> Safety. IARC Scientific Publications No. 33. Lyon,France: International Agency for Research on Cancer, 1979.9]**PEERREVIEWED**PRECAUTIONS FOR "CARCINOGENS": Principles that apply to chem or biochemlab also apply to microbiological &amp; cell-culture labs ... Specialconsideration should be given to route <strong>of</strong> admin. ... Safest method <strong>of</strong>administering volatile carcinogen is by injection <strong>of</strong> a soln. Admin bytopical application, gavage, or intratracheal instillation should beperformed under hood. If chem will be exhaled, animals should be keptunder hood during this period. Inhalation exposure requires specialequipment. ... unless specifically required, routes <strong>of</strong> admin o<strong>the</strong>r than in<strong>the</strong> diet should be used. Mixing <strong>of</strong> carcinogen in diet should be carriedout in sealed mixers under fume hood, from which <strong>the</strong> exhaust is fittedwith an efficient particulate filter. Techniques for cleaning mixer &amp;hood should be devised before expt begun. When mixing diets, specialprotective clothing &amp;, possibly, respirators may be required./Chemical Carcinogens/ [Montesano, R., H. Bartsch, E.Boyland, G. DellaPorta, L. Fishbein, R. A. Griesemer, A.B. Swan, L. Tomatis, and W. Davis(eds.). Handling Chemical Carcinogens in <strong>the</strong> Laboratory: Problems <strong>of</strong>Safety. IARC Scientific Publications No. 33. Lyon, France: InternationalAgency for Research on Cancer, 1979.9]**PEER REVIEWED**PRECAUTIONS FOR "CARCINOGENS": When ... admin in diet or applied to skin,animals should be kept in cages with solid bottoms &amp; sides &amp;fitted with a filter top. When volatile carcinogens are given, filter topsshould not be used. Cages which have been used to house animals thatreceived carcinogens should be decontaminated. Cage-cleaning facilitiesshould be installed in area in which carcinogens are being used, to avoidmoving <strong>of</strong> ... contaminated /cages/. It is difficult to ensure that cages

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