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Part I, written by D. A. Marlow, concerns the activities of ASTM Committee F-7-C on Contamination. Part II, written by A. Beerbower, concerns the methods that were developed by Technical Division O of Committee D-2 and recently turned over to Division C of Committee F-7. These include ten methods for sampling, three methods for processing samples, and four for analysis of particulates. Plans for further work to complete the coverage of sampling methods for additional situations, and some of the problems related to precision statistics, are described briefly. The new user is urged to avoid using methods more complicated than his situation actually demands.
particles, sampling, counting, size determination, precision, contamination, evaluation, tests
Marlow, D. A.
Research specialist, designMember ASTM, Lockheed Missiles and Space Company, Vandenberg Air Force Base, Calif
Senior research associateMember ASTM, Esso Research and Engineering Company, Linden, N. J.