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Guidance on the preparation and use of the required solutions for the determination of the dissolved oxygen content of water samples using Winkler's method. The procedure described avoids the use of s.. more
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Gives guidance on general fieldwork including specific measurements and techniques. Detailed guidance is included on measuring substances in the soil, water and air, and electronic measurements such a.. more
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The low melting point of gallium metal is demonstrated, eg by using warm water to melt a sample or by making it into a spoon shape and showing that it melts when used to stir a cup of tea.
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This document outlines the key points needed when planning to carry out fieldwork and sampling.
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During this challenge-based activity visiting children learn to follow a written method and pipette dropwise without contaminating samples.
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Testing for common gases is included in most chemistry courses. In this procedure students make their own sample of hydrogen gas to test.
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This edition includes notes on a serious accident which happened to an inexperienced teacher, exploding spirit burners, drinking bottled water in science lessons, and an  accident during an open eveni.. more
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Risk assessment guidance for calcium oxide (quicklime), calcium hydroxide (slaked lime) and strontium hydroxide-­‐8-­‐water (hydrated strontium hydroxide).
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Explains what is meant by environmental monitoring, and the range of equipment available. Describes in detail each of the parameters which can be monitored including possible difficulties. Also descri.. more
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This edition includes notes on blood and cheek cell sampling, inappropriate dumping of waste chemicals, and the role and value of the CE mark on equipment.
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