Handbook of Quality Assurance for the Analytical Chemistry Laboratory (2nd ed.)

xii a second edition might be in order, and readily agreed. Although the basic principles remain the same, discussions with analysts, laboratory supervisors, and managers indicated many areas where improve­ ments could be made. For example, new chapters have been added on sampling and quality assurance; laboratory facilities and quality assurance; and auditing for quality assurance. Very little of the first edition has been discarded, but many topics have been expanded considerably. The chapter