Key term for AQA GCSE Chemistry, used in Fertiliser Production.
Formulations containing specific ratios of nitrogen (N), phosphorus (P), and potassium (K) compounds to improve crop yield.
NPK Fertilisers appears in AQA GCSE Chemistry revision content for Using resources, especially Fertiliser Production and Production of NPK Fertilisers.
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Chemical analysis
Purity and Chromatography • Formulations
