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2026
Soil quality — Determination of potential nitrification and inhibition of nitrification — Rapid test by ammonium oxidation
2026
Fertilizers — Determination of bulk density (loose) of fine-grained fertilizers
2026
Fluid fertilizers — Preliminary visual examination and preparation of samples for physical testing
2026
Solid fertilizers and soil conditioners — Test sieving
2026
Solid fertilizers — Determination of mineral-acid-soluble sulfate content — Gravimetric method
2026
Fertilizers and soil conditioners — Determination of microamounts of inorganic anions in fertilizers by ion chromatography
2026
Carbonate liming materials — Determination of reactivity — Automatic titration method with citric acid
2026
Fertilizers — Sampling — Minimum mass of increment to be taken to be representative of the total sampling unit
2026
Fertilizer and soil conditioners — Fertilizer grade urea — General requirements
2026
Fertilizers and soil conditioners -Determination of biuret content of
urea-based fertilizers — HPLC method