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ISO 10084:1992PublishedSolid fertilizers — Determination of mineral-acid-soluble sulfate content — Gravimetric methodISO 10248:1996PublishedFluid fertilizers — De-aeration of suspension samples by film disentrainmentISO 10249:2026PublishedFluid fertilizers — Preliminary visual examination and preparation of samples for physical testingISO 14820-3:2020PublishedFertilizers and liming materials — Sampling and sample preparation — Part 3: Sampling of static heapsISO 14820-1:2016PublishedFertilizers and liming materials — Sampling and sample preparation — Part 1: SamplingISO 14820-2:2016PublishedFertilizers and liming materials — Sampling and sample preparation — Part 2: Sample preparationISO 15604:2016PublishedFertilizers — Determination of different forms of nitrogen in the same sample, containing nitrogen as nitric, ammoniacal, urea and cyanamide nitrogenISO 15958:2019PublishedFertilizers — Extraction of water soluble phosphorusISO 15959:2016PublishedFertilizers — Determination of extracted phosphorusISO 17318:2015PublishedFertilizers and soil conditioners — Determination of arsenic, cadmium, chromium, lead and mercury contentsISO 17319:2015PublishedFertilizers and soil conditioners — Determination of water-soluble potassium content — Potassium tetraphenylborate gravimetric methodISO 17322:2015PublishedFertilizers and soil conditioners — Analytical methods for Sulfur Coated Urea (SCU)ISO 17323:2015PublishedFertilizers and soil conditioners — Sulfur Coated Urea (SCU) — General requirementsISO 18642:2016PublishedFertilizer and soil conditioners — Fertilizer grade urea — General requirementsISO 18643:2016PublishedFertilizers and soil conditioners — Determination of biuret content of urea-based fertilizers — HPLC methodISO 18644:2016PublishedFertilizers and soil conditioners — Controlled-release fertilizer — General requirementsISO 18645:2016PublishedFertilizers and soil conditioners — Water soluble fertilizer — General requirementsISO 19670:2017PublishedFertilizers and soil conditioners — Solid urea aldehyde slow release fertilizer — General requirementsISO 19746:2017PublishedDetermination of urea content in urea-based fertilizers by high performance liquid chromatography (HPLC)ISO 19747:2020PublishedFertilizers and soil conditioners — Determination of monosilicic acid concentrations in nonliquid fertilizer materialsISO 19822:2018PublishedFertilizers and soil conditioners — Determination of humic and hydrophobic fulvic acids concentrations in fertilizer materialsISO 20620:2021PublishedFertilizers and soil conditioners — Determination of total nitrogen by combustionISO 20702:2017PublishedFertilizers and soil conditioners — Determination of microamounts of inorganic anions in fertilizers by ion chromatographyISO/TS 20917:2023PublishedFertilizers, soil conditioners and beneficial substances — Determination of ammonium citrate, disodium-EDTA soluble phosphorus and potassium by ICP-OES in inorganic fertilizersISO 20977:2018PublishedLiming materials — Determination of size distribution by dry and wet sieving