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Risk assessment guidance for dyes, indicators and stains.
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Using common dyes and indicators safely in practical activities. Many such compounds , or their solvents, are hazardous but are used in such small amounts and in a very controlled way so as to limit e.. 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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Fruit skin and fruit dyes as indicators
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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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Guidance on the preparation of Sudan III solution. This is used as a stain for lipids, such as fats and oils. 
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Complete index for the Student Safety Sheets
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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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A microscope based quiz where visiting children learn how to mount slides and view them with a junior microscope.
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Handling methanol safely in practical work. Methylated spirits is mainly ethanol with a little methanol added. Methanol is toxic as well as highly flammable.
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