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Precautions needed when using iodine or iodine solutions (iodine dissolved in potassium iodide or other solvents) i practical activities.
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Brief risk assessment guidance and experimental notes for a range of practical activities involving iodine and iodine solutions (Hazcard 54).
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Risk assessment guidance for using iodine solid and solutions.
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Guidance on how to prepare iodine solutions (dissolved in potassium iodide).
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This guide describes a method of finding the iodine number for fats and oils using bromine that does not require a fume cupboard and can therefore be used as a class activity.
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The Landolt method (potassium iodate(V) and sodium metabisulfite) was the first iodine clock reaction described, and can be used for a simple two-reagent investigation.
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Iodine clock reactions produce iodine, which reacts with starch to give the distinct blue/black colouration. The iodide-persulfate method is one of the simplest clock reactions, involving simple kinet..
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A straightforward and commonly-used practical activity
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Guidance on how to prepare the stains needed for gram staining - to distinguish between Gram-positive and Gram-negative bacteria.
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A simple protocol used to show that leaves have been photosynthesising by testing for starch.
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Showing results 1 to 10 of 97
