The purpose of this standard is: (1) To provide uniform procedures to be used in the measurement and reporting of fly ash resistivity. (2) To provide additional requirements to those given in ANWASME Pl'C 28-1965, Determining the Properties of Fine Particulate Matter [ 1 1. (3) To provide additional recommendations to the Informative Report No 2-June 1965 of the Air Pollution Control Association's Committee No This standard is not intended to replace the earlier efforts of documents described in the preceding paragraphs except where updating is clearly indicated.