. The principles of bacteriology: a practical manual for students and physicians. Arnold steam sterilizer. reservoir, so that in practice the apparatus requires butlittle attention, as with ordinary care there is no likeli-hood of the water in the reservoir becoming exhausted,with the consequent destruction of the 9 shows a section through this apparatus. STERILIZATION UNDER PRESSURE. The advantages of the use of steam under pressurefor the purposes of sterilization have received such 74 BACTERIOLOGY. general recognition that almost everywhere this methodis supplanting the olde
. The principles of bacteriology: a practical manual for students and physicians. Arnold steam sterilizer. reservoir, so that in practice the apparatus requires butlittle attention, as with ordinary care there is no likeli-hood of the water in the reservoir becoming exhausted,with the consequent destruction of the 9 shows a section through this apparatus. STERILIZATION UNDER PRESSURE. The advantages of the use of steam under pressurefor the purposes of sterilization have received such 74 BACTERIOLOGY. general recognition that almost everywhere this methodis supplanting the older one of intermittent sterilizationwith streaming or live steam. By this plan one is ableto accomplish, by a single exposure of fifteen minutes tosteam under a pressure of one atmosphere, the same endthat would, with streaming steam, require three expos-ures of fifteen minutes on each of three successive days. Fig. A B AutoclaTe, pattern of Wiesnegg. A. External appearance. B. Section. For sterilization by steam under pressure several spe-cial forms of apparatus exist. The principles involvedin them all are, however, the same. They provide forthe generation of steam in a chamber from which itcannot escape when the apparatus is closed. Upon thecover of this chamber is a safety-valve, which can beregulated so that any degree of pressure (and coinci- STERILIZATION BY HOT AIR. 75 dently of temperature) that is desirable may be main-tained within the sterilizing chamber. These sterilizersare known as digesters and as autoclaves. Their Fig. 11.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbacteri, bookyear1902
