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Paragraph 3.7 Reagents

Northern Ireland Not yet in force

Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below:

Ammoniacal magnesium solution: dissolve 8.75 g magnesium sulphate (MgSO4.7H2O) and 17.5 g ammonium chloride in 50 ml water. Add 30 ml ammonia solution (d = 0.88 g/ml) mix well and dilute to 100 ml with water.