IMPROVEMENT OF THE QUALITY-CONTROL OF GLASS ANALYSIS - PART 1 - INTERLABORATORY STUDIES

In order to control the quality of element determinations in glass, th e Standards, Measurements and Testing Programme (formerly BCR) of the European Commission has starred a project in which the final aim is to certify a glass reference material for its content of a range of trac e elements (As, Ba. Cd, Co, Cr. Pbl Sb, Se), fluoride and chloride. Th e first part of this project consisted in a series of interlaboratory studies which aimed to test the feasibility of preparation of candidat e glass reference materials and to detect and remove most of the pitfa lls observed in element determinations. This paper presents the main r esults of the interlaboratory studies carried out prior to the certifi cation campaign of a glass reference material.