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A guide describing some simple, inexpensive and successful methods for carrying out paper and thin layer chromatography, illustrated with examples using biro ink and lipstick.
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Amino acids can be identified and separated using paper chromatography, a cheaper alternative to using TLC. The amino acids need to be stained with ninhydrin to reveal the spots after the run.
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It is becoming increasingly difficult to determine the composition of food dyes in an unknown mixture, because formulations have been altered over time, and, as a consequence, the results never match .. more
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Guidance on general topics including chromatography and electrophoresis, cryogenics, soldering and electrical connections, electrolysis, glass working, glues and adhesives, photography, using pupils a.. more
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A summary of queries to CLEAPSS concerning suggested practical activities which either did not work or were unduly hazardous. Ways around these problems are either included within this document or in .. more
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Thin layer chromatography is a quick and effective method of separating pigments within leaves. The pigments run clearly on the chromatogram with little outward spread, allowing Rf values to be calcul.. more
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This edition includes advice on using phenolphthalein, and notes on CLEAPSS YouTube videos, a radioactivity update, ventilation in chemical stores, hepatitis, laboratory water supplies, a chromatograp.. more
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Covers the fundamental activities that use plants, and includes advice on which plants to use and how to keep plants at school. 
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Describes two simple microscale practical activities, one a demo, the other for class use, for illustrating the electrolytic separation of copper and chromate ions. Copper chromate is made, in situ, b.. more
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Index to currently published guidance on the preparation of specific solutions and other reagents. Includes a summary Contents List giving the dates of the most recent versions of recipes. Note: this .. more
words matched: chromatography, paper

Showing results 1 to 10 of 330
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