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1.1 This guide is intended to assist laboratories in maintaining precision and controlling bias in testing. It includes statistical procedures for detecting lack of control, changes in calibration constants, and in operator technique. Suggestions are given for the correction of some out of control situations.

1.2 This guide includes the following topics:

Topic Title SectionNumberScope1Referenced Documents2Terminology3Significance and Use4Calibration Control5Test Performance Control6Annexes:Calibration ControlAnnex A1Test Performance ControlAnnex A2

1.3 This standard does not give all of the details for preparing statistical quality control charts or the statistical tests used to interpret them, but such information may be found easily in a number of publications.