Ignition, loss on, 30.
Incubation, 99.
Indol test, broth for, 107.
Indicators, 36, 94, 107.
Iodine and bromine, determination of, 61.
Iron and Aluminium, separation, 57.
analysis of, 79.
Iron, determination of, 43.
standards, 45.
sulfate, determination of, 41.
analysis of, 81.