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Guidance on how to prepare and use of DNSA (or DNS) reagent for reducing sugars. The reagent may be used qualitatively or quantitatively (colorimetric method).
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Risk assessment guidance for Salicylic acid, aspirin & similar esters
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Guidance on how to prepare Benedict's quantitative solution. This is used for the quantitative analysis of reducing sugars.
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Guidance on how to prepare Benedict’s qualitative solution. This is used to qualitatively test for reducing sugars e.g. glucose, via a colour change.
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Guidance on how to prepare (and use) of Fehling's solutions A and B.
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Although both aldehydes and ketones contain the carbonyl functional group (-C=O), only aldehydes (or reducing sugars) give a positive ‘silver mirror’ test result with Tollen’s reagent. This small-scal..
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Although both aldehydes and ketones contain the carbonyl functional group (-C=O), only aldehydes give a positive test (formation of an orange to brick-red precipitate of copper(I) oxide) with Fehling’..
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Covers a wide range of enzymes commonly used in school science, and includes advice on how they can be prepared for use in lessons.
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This contains all Hazcards updated in 2025 in one handy file. For a all in one file of ALL Hazcards see updates here.
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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 ..
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