1953
DOI: 10.1021/ed030p343
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An inexpensive, easily constructed spectrophotometer

Abstract: JYIanually operated spectrophotometers that are commercially available, and usable in the range of the visible spectrum, vary in price from approximately g400 to $1300. In certain of these instruments the monochromator is a diffraction grating, and the resulting spectral dispersion is linear throughout the wavelength range covered. Other spectrophotometers have quartz or glass prisms as spectral dispersing elements. Considered by some to be a disadvantage is the fact that prismatic dispersion is nonlinear.In r… Show more

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Cited by 10 publications
(13 citation statements)
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“…Agrawal and Ugaz [42] [43] [44] have even developed an extremely inexpensive and portable PCR machine, which replaces an expensive Peltier chip with a ring shaped reaction vessel and three heating zones set at fixed temperatures. Finally, inexpensive surface enhanced Raman spectroscopy substrates [45] [46] centrifugation equipment [47] , and spectrometers [48] [49] have all been reported in the recent literature. Moving forward, it is easy to imagine that technologies such as these could be integrated with the CheapStat to increase their utility in advanced analytical applications, including medical diagnostics.…”
Section: Resultsmentioning
confidence: 99%
“…Agrawal and Ugaz [42] [43] [44] have even developed an extremely inexpensive and portable PCR machine, which replaces an expensive Peltier chip with a ring shaped reaction vessel and three heating zones set at fixed temperatures. Finally, inexpensive surface enhanced Raman spectroscopy substrates [45] [46] centrifugation equipment [47] , and spectrometers [48] [49] have all been reported in the recent literature. Moving forward, it is easy to imagine that technologies such as these could be integrated with the CheapStat to increase their utility in advanced analytical applications, including medical diagnostics.…”
Section: Resultsmentioning
confidence: 99%
“…The first research group who reported an inexpensive and easily constructible spectrometer was Westneat and co-workers in 1953. 41 This unit is one of the earliest developments of spectrometric units for pedagogical purposes. 19,41 Later, Grove et al and Wilson and co-worker reported spectrographs in which student-designed and tested spectrophotometers were created.…”
Section: ■ Introductionmentioning
confidence: 99%
“…Despite these disadvantages, access to cheap off-the-shelf items expanded drastically over the past decade, creating a new toolkit for professional educators in scientific fields. Numerous different spectrometers have been developed and implemented as classroom-based demonstrations and laboratory exercises. Some of these do-it-yourself projects are based on colorimetric detection using cheap and commercially available parts; meanwhile, other systems may utilize smartphones to create a functioning miniature spectrometric unit. ,, Numerous projects featuring uniquely constructed colorimeters and DIY spectrophotometers have included excellent teaching practices for a wide range of student audiences. The common objective of all of these different developments is the design for educational purposes. Previously constructed units are relatively easy to build; thus, experimentations are interesting, informative, and actively engaging.…”
Section: Introductionmentioning
confidence: 99%
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