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Guidance outlining the different types of indicator used for making agar cubes for diffusion. It covers how to prepare, use and store the agar. 
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This activity can be used as an introduction to microscale drop, or “puddle” chemistry. It demonstrates that indicators do not always change at pH7.
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In this microscale procedure, students can investigate confirmatory tests for common anions. It provides good talking points for the diffusion of gases and appearance of coloured halos. Students can w.. more
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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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Risk assessment guidance for dyes, indicators and stains.
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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
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 Please note: This is a temporary resource providing a summary Contents List of all recipe sheets published to date. RB 000 is a working document, subject to frequent changes as our guidance is update.. more
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This document contains:An outline of colorimetryThe principles of the CLEAPSS colorimeterUsing a CLEAPSS colorimeter which has been set upSetting up the CLEAPSS colorimeterproducing a calibration curv.. more
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Complete index for the Student Safety Sheets
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Brief risk assessment guidance and experimental notes for a range of activities involving aluminium metal (Hazcard 1).
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