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Guidance on the preparation and disposal of potassium metabisulfite and sodium metabisulfite solutions.
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Risk assessment information for sodium and potassium metabisulfites, bisulfites and sulphites.
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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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Using these sodium salts safely in practical work, Includes metabisulfite and the equivalent  potassium salts. Sodium sulfite is also known as sodium sulfate(IV), sodium hydrogensulfite  as sodium hyd.. more
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Guidance on how to prepare sulfur dioxide solutions. Two methods are described along with a note on how to make an 'acid rain' solution.
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Guidance on how to prepare sulfur dioxide gas. 
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Precautions needed when using sulfur dioxide, preparing it or where it may be a by-product of a reaction.
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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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All Hazcards updated in 2021 in one handy file, this is only those Hazcards which have been updated in 2021. For ALL Hazcards in one file use our All in one version.
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Complete index for the Student Safety Sheets
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