Spectrophotometers are tools to measure the intensity of light absorbed, once it passes through a sample.  The idea is each compound will either absorb or transmit light through a certain wavelength range.  Detectors can measure emission and excitation  and is commonly used for quantitative analysis in a wide range of industries.  Each of our systems come fully tested and validated by our service team.  We use NIST traceable reference to ensure instrument is performing up to factory specification.   Each Spectrophotometer comes backed with our standard warranty and ships out within three business days.