Sample

1. A portion of a material or product intended to be a representative of the whole. A LIMS sample may be further subdivided into sub-samples or aliquots.
2. The matter analyzed in chromatography; may consist of a single component or it may be a mixture of components. When the sample is treated in the course of an analysis, the phase or the phases containing the analytes of interest is/are referred to as the sample whereas everything out of interest separated from the sample before or in the course of the analysis is referred to as waste.