Page 87 - The Veterinary Laboratory and Field Manual 3rd Edition
P. 87

56  Willy Schauwers




































            Figure 2.14  Simple cool box, to be used with cool packs. Photo: Dr Ziay Ghulam, Dr Wahidullah Bahaer,
            Central Veterinary Diagnostic and Research Laboratory, Kabul, Afghanistan.


                                                       if not allowed to escape. Always use protec-
                                                       tive gloves when dealing with dry ice. It is
                                                       so cold that it will either burn your skin, or
                                                       more likely cause frostbite. By using a pair
                                                       of gloves, you can safely handle the dry ice
                                                       without injury.

                                                     PortabLE dry IcE MakEr
                                                     A  portable  dry  ice  maker  generates  approxi-
                                                     mately 1 kg of solid carbon dioxide in just 1 min.
                                                     A dry ice maker is safe and simple to use and
                                                     requires no electrical power. The unit is simply
                                                     attached to a cylinder of compressed liquid car-
                                                     bon dioxide via a hose with an internal siphon
                                                     and valve (Figure 2.15).
                                                       The dry ice maker creates one solid block of
                                                     solid carbon dioxide weighing approximately
            Figure 2.15  Dry ice maker. Photo: Scilogex, Rocky   1  kg, the carbon dioxide sublimates slowly
                                                                                       2
            Hill, Connecticut, USA.                  because of the relatively small surface area.






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