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A small-scale low-cost portable gas chromatograph (the total cost of the instrument is approximately 65) was developed that is suitable for hands-on learning and teaching of the basic concepts of chromatography. The portability and miniaturization were ensured by the application of a small propane/butane cylinder to supply the carrier gas and by the use of optic fibers for light transmission to the electronic unit with a photoresistor as a sensor. The instrument proved that the measurements are sufficiently detailed and reliable for the basic chromatographic concepts to be introduced through a hands-on approach. The instrument does not require the use of a computer for recording data, and it also enables students actively to engage in measurements and in the assembling of the instrument at higher level.
Vrtačnik et al. (Tue,) studied this question.