In its most basic form, the UV-VIS spectrophotometer comprises a light source, a method for separating out the light into its spectrum, and a method to detect light once it has bounced off of a sample. UV-VIS spectrophotometers are widely available in scientific instrument catalogs and are simple to purchase, and for good reason—they are a valuable commodity in the lab. Some key purchasing considerations include: type of sample to be measured, single- or double-beam configuration, user interface, cuvette holder, and spectral bandwidth. A range of accessories such as coolers, heaters, and shakers complete the offering.
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