UV-Vis spectroscopy is the measurement of the wavelength and intensity of absorption of near-ultraviolet and visible light by a sample. The light source is a deuterium lamp for UV measurements and a tungsten lamp for visible measurements. After passing through the sample, “white” light from the two lamps is separated into discrete wavelengths by a holographic grating. An array of diodes records absorbance at specific wavelengths. This instrument is commonly used for analysis of total phenolics, color profiles, and absorbance at 280 and 420 nm.
We achieve economies of scale here at ETS based on the volume of samples
processed at a given time. As a consequence we are pleased to pass these
savings on to our customers, offering discounts for multiple sample
submissions. These discounts apply only to samples submitted at the same