The aim of any microscope is to magnify images or photos of a small object and to see fine details. In forensic; the type of specimen, the information one wishes to obtain from it and the type of microscope chosen for the task will determine if the sample preparation is required. For example, ink lines, blood stains or bullets, no treatment is required and the evidence shows directly from appropriate microscope without any form of sample preparation, but for traces of particular matter, the sample preparation must be done before microscopical examination occurs.