PART 4000
INORGANIC NONMETALLIC CONSTITUENTS
Part Coordinator
Edward F. Askew
JOINT TASK GROUP CHAIR FOR THE 22ND EDITION
4020 Quality Assurance/Quality Control ....................................................................Edward F. Askew
SUMMARY OF MAJOR CHANGES SINCE 2005
Quality Assurance/Quality Control (4020) was significantly revised to stay abreast of regulatory
requirements and clarify the essential quality control practices for test methods in Part 4000.
Also, many methods now refer users to the quality control practices that are considered to be an
integral part of the method.
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