摘要：Quality evaluation of analytical laboratories must be estimated through accuracy, precision and traceability of measurement results. In European countries, acceptable analytical results are those which come from accredited laboratories (EN ISO/IEC 17025:2000). This paper presents examples of traceability, measurement uncertainty, inner quality control and control through the interlaboratory proficiency testing of results for milk fat. Also it demonstrates proficiency testing organization of results for fat, protein, lactose and somatic cells in milk.
关键词：traceability; measurement uncertainty; comparation of measurement results
