... avoid rough,plates, hasty spreads, and digging into agar; and if you have access.to a ventilated safety cabinet, use it; it affords your best protection. ...

... hygienic measures do not seem to suffice, bran, agar, or petrolatum may be used with safety. 216 THE CONQUEST OF CONSTIPATION Drug-taking by ...

... of the microscopic findings. However, for reasons of safety,,use only agar slants for this purpose. . .mever use plates. The ...

... e, weighing, suspending in waker and inoculating of agar disks. These operations are all conducted in the ventilated blending safety cabinet. The quart jar containing samples is stored ...

... is comparatively simple. The bacilli are grown on agar for twenty-four hours, washed off with sterile normal salt solution, standardized by counting the bacilli, and killed by heating to 56° C. for one hour. As a matter of safety, 0.25 per cent, of tricresol is then ...

... medium with a slanted surface is employed, as agar, potato or blood-serum, the needle should lightly streak the surface, "smear-culture" (Figs. 22 and 23). 64 MANUAL OF BACTERIOLOGY. The safety and success of this method of inoculation de- ...

... Bacteriologic determinations are of value in indicating the safety of supply. Two counts are used, the gelatin plate at 20 degrees C., and the agar plate at 37 degrees C. The former indicates ...

... convenient to cut it into small pieces. Some agar is furnished in powdered ... taken to prevent the safety valve from blowing off suddenly, as a sudden ...

... analyses and (2); standards for judging the current safety of a supply from the individual test results. (c) The bacteriological examinations recognized as being of most value are: (1) The count of total colonies developing on agar or gelatin in 48 hours at 20* C. ( ...