. A laboratory guide in bacteriology, for the use of students, teachers and practitioners. Bacteriology. BACTERIOLOGICAL TECHNIC 13 sheet-copper walls {e, e) to the large compartment {b). Larger forms on the same principle are in use (Fig. 8). The media to be sterilized are placed in the large chamber {d, Fig. 7). The water is then heated until steam is generated, and the action of the steam on the media is continued for 20 minutes from the time steam. Fig. 6 Arnold Steam Sterilizer The hood is taken off and the door opened, showing inside arrangement Fig. 7 Arnold Steam Sterilizer a. Inner wa
. A laboratory guide in bacteriology, for the use of students, teachers and practitioners. Bacteriology. BACTERIOLOGICAL TECHNIC 13 sheet-copper walls {e, e) to the large compartment {b). Larger forms on the same principle are in use (Fig. 8). The media to be sterilized are placed in the large chamber {d, Fig. 7). The water is then heated until steam is generated, and the action of the steam on the media is continued for 20 minutes from the time steam. Fig. 6 Arnold Steam Sterilizer The hood is taken off and the door opened, showing inside arrangement Fig. 7 Arnold Steam Sterilizer a. Inner water compartment b. Outer water compartment c. Perforated bottom d. Sterilizing chamber e. Sheet-copper walls begins to rise. This process is repeated on two succeed- ing days, so that the media have been exposed to the steam for three days. On the first day all vegetative forms are killed. The media are then kept at room or incubator temperature, so that spores which may be present and are not killed by the first exposure may develop into vegetative forms and be killed by the second exposure. If after this any spores should. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Heinemann, Paul Gustav. Chicago, Ill. , The University of Chicago Press
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