. Bacteriological methods in food and drug laboratories, with an introduction to micro-analytical methods. Bacteriology; Food; Drug adulteration; Bacteriology. 238 BACTERIOLOGICAL METHODS Table II. Stock i Per Cent. Solution (for Dilutions) (i cc. disinfectant; 99 cc. distilled water) Solution A cc. of A cc. Dist. Water cc. of A cc. Dist Water cc. of A cc. Dist. Water i:i200 = 5 + 55 or 4 + 44 or 2 + 22 1:1300 = 5 + 60 or 4 + 48 or 2 + 24 1:1400 = 5 + 65 or 4 + 52 or 2 + 26 1:1500 = 5 + 70 or 4 + 56 or 2 + 28 1:1600 = 5 + 75 or 4 + 60 or 2 + 30 1:1700 = 5 + 80 or 4 + 64 or 2 + 32 1:1800 = 5 +
. Bacteriological methods in food and drug laboratories, with an introduction to micro-analytical methods. Bacteriology; Food; Drug adulteration; Bacteriology. 238 BACTERIOLOGICAL METHODS Table II. Stock i Per Cent. Solution (for Dilutions) (i cc. disinfectant; 99 cc. distilled water) Solution A cc. of A cc. Dist. Water cc. of A cc. Dist Water cc. of A cc. Dist. Water i:i200 = 5 + 55 or 4 + 44 or 2 + 22 1:1300 = 5 + 60 or 4 + 48 or 2 + 24 1:1400 = 5 + 65 or 4 + 52 or 2 + 26 1:1500 = 5 + 70 or 4 + 56 or 2 + 28 1:1600 = 5 + 75 or 4 + 60 or 2 + 30 1:1700 = 5 + 80 or 4 + 64 or 2 + 32 1:1800 = 5 + 85 or 4 + 68 or 2 + 34 1:1800 = 5 + 85 or 4 + 68 or 2 + 34 1:2000 = 5 + 95 or 4 + 76 or 2 + 38 1:2200 = 5 + 105 or 4 + 84 or 2 + 42 1:2400 = 5 + 115 or 4 + 92 or 2 + 46 1:2600 = 5 + 125 or 4 + 100 or 2 + 50 1:2800 = 5 + 135 or 4 + 108 or 2 + 54 1: 3000 = 5 + 145 or 4 + 116 or 2 + 58 1:3200 = 5 + 155 or 4 + 124 or 2 + 62 Seeding Tubes.—The seeding tubes are glass test-tubes 1 in. in diam. and about 3 in. long, with round bottoms. In order to ^fKCZ^ "'"•"Wtfi'TIf. Fig. 84.—Block for holding the subculture tubes.—(Anderson & McClintic, Hygiene Laboratory Bulletin No. 82, U. S. Public Health Service ) measure the disinfectant into them they are placed in a suitable wooden stand to receive them. We found it convenient to use a wooden block containing six rows of fifteen holes each for the disinfectant to be tested and a separate stand for the phenol con- trols. The tubes are placed in the stand and each marked with the strength of dilution it is to contain. The rows of tubes run-. 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 Schneider, Albert, 1863-1928. Philadelphia, P. Blakiston's Son & Co
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