. Pathogenic microörganisms; a practical manual for students, physicians, and health officers . Fig. 58.—Safety-burner. Fig. 59.—Heat regulator.(Dunham.) Fig. 60. — Heat regulator.(Roux.) Bimetallic. Apparatus for and Methods of Incubation.—The selection of the temperaturefor incubation depends on the organism to be grown and the medium the optimum temperature for growth may vary between 5° and 50°C. or more, the great majority of organisms will grow at either 22° or 37° are the temperatures usually employed. For general purposes the formeris obtained by incubation a
. Pathogenic microörganisms; a practical manual for students, physicians, and health officers . Fig. 58.—Safety-burner. Fig. 59.—Heat regulator.(Dunham.) Fig. 60. — Heat regulator.(Roux.) Bimetallic. Apparatus for and Methods of Incubation.—The selection of the temperaturefor incubation depends on the organism to be grown and the medium the optimum temperature for growth may vary between 5° and 50°C. or more, the great majority of organisms will grow at either 22° or 37° are the temperatures usually employed. For general purposes the formeris obtained by incubation at room temperature. Where a more exact anduniform temperature is necessary an incubator must be employed. This is adouble-waUed oven, the space between the walls being filled with water; heatis supplied by gas or electricity and cooling by the addition of cold latter is only necessary when the outside temperature rises above 22° heating or the addition of water is controlled by an automatic maintain a temperature of 37° C. a similar incubator is emp
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