ABSTRACT
Quality control techniques include all practices and procedures that lead to statistical control and to the achievement of the accuracy requirements of the measurement process. Adequate competence and expertise of the technical staff are the first requirements for quality measurements. Competence is based on an adequate and sound educational background, specific training to perform assigned duties, and experience in the use of the techniques and methodologies employed. Modern chemical analysis typically requires specialized facilities, apparatus, and equipment, and success or failure can often be traced to their adequacy and mode of utilization. Specialized apparatus and equipment are rapidly displacing general purpose equipment so that certain kinds of analytical measurements are limited to laboratories where they are available. Good laboratory practices (GLPs) and good measurement practices embrace the total experience of analytical chemists in the making of good measurements. GLPs refer to the general practices that relate too many if not all of the measurements made in a laboratory.
