GB/T 34763-2017 Urea aldehyde slow release fertilizer

GB/T 6679-2003 General rules for sampling solid chemical products GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB 8569-1997 Packing of solid chemical fertilizers GB/T 8569-2009 Packing of solid chemical fertilizers GB/T 8572-2001 Determination of total nitrogen content for compound fertilizers—Titrimetric method after distillation GB/T 8572-2010 Determination of total nitrogen content for compound fertilizers titrimetric method after distillation GB/T 8576-2002 Determination of free water for compound fertilizers—Vacuum oven method GB/T 8576-2010 Determination of free water for compound fertilizers—Vacuum oven method GB/T 8577-2002 Determination of free water for compound fertilizers-Karl fischer method GB/T 8577-2010 Determination of free water for compound fertilizers—Karl Fischer method GB/T 14540-2003 Determination of copper,iron,manganese,zinc,boron and molybdenum content for compound fertilizers GB 18382-2001 Fertilizer marking—Presentation and declaration GB 18382-2021 Fertilizer marking—Presentation and declaration GB/T 19203-2003 Determination of calcium, magnesium and sulphur content for compound fertilizer GB/T 22924-2008 Determination of biuret content for compound fertilizers(complex fertilizers) GB/T 24891-2010 Determination of particle size for compound fertilizers GB/T 34764-2017 Determination of copper,iron,zinc,manganese,boron and molybdenum content in fertilizers—Inductively coupled plasma optical emission spectroscopy GB/T 22924-2024 Determination of biuret content for compound fertilizers HG/T 2843-1997 Fertilizer products commonly used in chemical analysis include standard titration solutions, standard solutions, reagent solutions, and indicator solutions GB/T 19203-2026 Determination of calcium,magnesium and sulphur content for compound fertilizers