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Explains the relative merits of three different ways of producing printed circuit boards by etching copper-clad boards.
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Brief risk assessment guidance and experimental notes for a range of practical activities involving nitric(V) acid (Hazcard 67).
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Brief risk assessment guidance and experimental notes for a range of activities involving (oxidising) ammonium salts (Hazcard 8).
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This edition includes notes on confusion over universal indicators; advice on demonstrating the thermit (thermite) reaction, issues with new laboratories, and information for teachers of D&T on pu.. more
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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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How to prepare solutions of sodium hydroxide.
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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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Risk assessment guidance for nitric(V) acid (HNO3).
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Using iron metal, iron oxides, iron sulfates, and iron chlorides safely in practical work
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How to prepare aqueous potassium hydroxide and lithium hydroxide solutions. Also includes guidance on the preparation of alcoholic potassium hydroxide solution (10% w/v).
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