A method for the sampling one or all phases of batch sewage treatment
process to obtain an accurate timing of completion of one or all of the
phases of the batch sewage treatment process. The number and timing of
samples taken is selected to provide samples over the length of a given
phase or a group of phases or all phases of the batch sewage treatment
process recommended by the manufacturer of the equipment. Samples are
analyzed to determine the end point of the reactions in the phase being
sampled. Based upon the results of the tests the sampling regime or the
timing of the phase can be revised.