The purpose of this book is to provide the user with the means to create a quality assurance manual which will satisfy the needs of his or her particular laboratory while meeting the requirements of any regulatory or accrediting body with which the organization may be associated. This third edition has been prepared to assist laboratories seeking accreditation in the preparation of the quality assurance/control manual as required by American National Standard ANSI/ISO/ASQ 49001-2000, Quality management Systems-Requirements, and/or American National Standard ANSUISO 17025- 1999, General requirements for the competence of testing and calibration laboratories