ELEMENTAL ANALYSIS (EA) – The elements of interest are to be quantified for each material using microwave assisted sample preparation techniques employing acid digestion or, if appropriate, methods similar to those described for polyvinyl chloride (PVC) compounds in the Elemental Analysis section of the Reference Standard for Electrical Wires, Cables, and Flexible Cords, UL 1581, (or by other means) using an atomic absorption (AA) spectrophotometer or Inductively Coupled Plasma (ICP) spectrometer instrumentation, or both