... HANDLING AND PREPARATION 11.1 Analytical tests may be required for a variety of reasons, including establishing anaverage analyte value across a material, establishing an analyte concentration ... LGC,UK; Bernard King, NARL, Australia; Alan Squirrell, NATA, Australia and Maire Walsh,State Laboratory, Ireland. In addition, over the years leading to the drafting of this andearlier versions ... profileacross a material, or determining local contamination in a material. In some cases, forexample forensic analysis, it may be appropriate to examine the entire material. In others,it is appropriate...