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TLC of Fruit Juices—Student Laboratory Kit

By: The Flinn Staff

Item #: AP7405

Price: $80.05

In the TLC of Fruit Juices Chromatography Laboratory Kit, students spot TLC plates with standard mixtures of acids along with juice. Upon plate development, students measure and assess the lengths traveled to find the juice components.

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This item can only be shipped to schools, museums and science centers

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Are any other acids found in fruit juices besides citric acid? Some edible fruits contain six or more carboxylic acids, including benzoic and traces of oxalic. How are these acids separated and identified? Thin layer chromatography, or TLC, is a quick and inexpensive method to identify organic components in a mixture. Students spot TLC plates with standard mixtures of citric, tartaric and succinic acids along with juice samples. Once the plates are developed, students measure and compare the distances traveled to determine the juice components. Includes all chemicals and consumable supplies needed to perform the lab.

Complete for 30 students working in pairs. Perform this experiment in a fume hood or well-ventilated lab.