A Laboratory Spectrometer is a scientific instrument used to separate and measure spectral components of a physical phenomenon. Spectrometer is a broad term often used to describe instruments that measure a continuous variable of a phenomenon where the spectral components are somehow mixed. In a scientific study, scientists use spectrometer to find out the composition of things on earth and/or in space including the elemental components. In a laboratory setting, spectrometers can identify toxins in the bloodstream, contaminants, and diseases. The basic function of a Laboratory Spectrometer is to take in light, break it into its spectral components. It is very accurate.