Samples,
bacterial, 93.
bottles, 1.
chemical, 1.
interval before analysis of, 2.
quantity required, 1.
representative, 3.
sludge and mud, 73.
Sewage sludge, analysis, 73.
Silica, determination of, 56.
Soda ash, analysis of, 82.
Soap method (hardness), 31.
Sodium and potassium, 58.
Solids, total, fixed, volatile, 29.
Specific gravity of sludge and mud, 74.
Stability, relative, of effluents, 69.
method, relative, 71.
Standards,
ammonia, 17.
chlorine, 65.
color, 9.
hardness, 32.
iron, 45.
Nessler, color, 10.
platinum-cobalt, 10.
turbidity, 4.
Sterilization of media, 95.
Storage of samples, 2, 98.
Sugars for media, 94.
Sugar broths, 95.
Sulfate, K and Na, 58.
Suspended matter, 30.