GB/T 40750-2021 Biogas slurry for agricultural use

GB 7959-2012 Hygienic requirements for harmless disposal of night soil GB/T 6920-1986 Water quality—Determination of pH value—Glass electrode method GB 13690-1992 Classification and labels of dangerous chemical substances commonly used GB 13690-2009 General rule for classification and hazard communication of chemicals GB/T 14675-1993 Air quality—Determination of odor—Triangle odor bag method GB 17323-1998 Bottled purified water for drinking GB/T 19524.2-2004 Determination of mortality of ascarid egg in fertilizers GB/T 23349-2009 Ecological index of arsenic,cadmium,lead,chromium and mercury for fertilizers GB/T 23349-2020 Determination of arsenic,cadmium,chromium,lead and mercury contents for fertilizers GB/T 24774-2009 Classification and hazard pictograms for chemicals—General specification NY 525-2002 Organic fertilizer HJ 497-2009 Animal husbandry and poultry breeding industry pollution control engineering technical specifications NY/T 525-2021 NY/T 525-2021 Organic fertilizer NY 525-2011 NY 525-2011 Organic fertilizer NY 525-2012 NY 525-2012 Organic fertilizer NY/T 1971-2010 Determination of humic acid content in water-soluble fertilizer NY/T 1973-2021 Determination of Water-soluble Fertilizer Content of Insoluble Matter and pH NY/T 1973-2010 Determination of water-soluble fertilizer insoluble matter content and pH value NY/T 1977-2010 Determination of Total Nitrogen, Phosphorus, and Potassium Content in Water-soluble Fertilizers NY/T 2540-2014 The determination of potassium content in fertilizer