Sterilization of sugar is media specified in greater detail.
Preparation of Endo Medium.
Synthetic Medium for the Methyl Red Test.
There are no changes in the chemical methods in this edition.
AMERICAN PUBLIC HEALTH ASSOCIATION.
LABORATORY SECTION.
STANDARD METHODS FOR THE EXAMINATION OF WATER AND SEWAGE.
Compiled and revised by committees of the American Public Health Association and the American Chemical Society and referees of the Association of Official Agricultural Chemists.
COLLECTION OF SAMPLES.
QUANTITY REQUIRED FOR ANALYSIS.
The minimum quantity necessary for making the ordinary physical, chemical, and microscopical analyses of water or sewage is 2 liters; for the bacteriological examination, 100 cc. In special analyses larger quantities may be required.