This standard is intended as a guideline in the proper preparation of a metallographic sample (microsection) of a printed board. The finished microsection is used for evaluating the quality of the laminate system and plated structures (e.g. PTHs and vias). Microsection sample preparation is regarded by many as a highly developed skill. The guidelines in this standard discuss the many variables and problems associated with the process from sample removal to micro-etch. The guidelines do not promote any one vendor’s process, but discuss the variables common to microsectioning.