Water-soluble fertilizers containing humic-acids
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of water-soluble fertilizers containing humic-acids (primary nutrient and micronutrient).
This standard is applicable to the liquid or solid water-soluble fertilizers produced and sold within the territory of the people's Republic of China, which are composed of humic acids in a proportion required for plant growth and mixed with appropriate amount of primary nutrients of nitrogen, phosphorus and potassium and micronutrients of copper, iron, manganese, zinc, boron and molybdenum.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 190 Packing symbol of dangerous goods
GB 191 Packaging—Pictorial marking for handling of goods
GB/T 6679 General rules for sampling solid chemical products
GB/T 6680 General rules for sampling liquid chemical products
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB 8569 Packing of solid chemical fertilizers
GB/T 8576 Determination of free water for compound fertilizers—Vacuum oven method
GB/T 8577 Determination of free water for compound fertilizers—Karl Fischer method
NY/T 887 Liquid fertilizers—Determination of density
NY/T 1108 Liquid fertilizers—Tech-regulations of package
NY 1110 Water-soluble fertilizers—Content-limits of mercury, arsenic, cadmium, lead and chromium
NY/T 1115 Water-soluble fertilizers—Determination of water insoluble matter content and pH
NY/T 1117 Water-soluble fertilizers—Determination of calcium, magnesium, sulphur and chlorine content
NY/T 1971 Water-soluble fertilizers—Determination of humic-acids content
NY/T 1972 Water-soluble fertilizers—Determination of sodium, Selenium, silicon content
NY/T 1974 Water-soluble fertilizers—Determination of copper, iron, manganese, zinc, boron, molybdenum content
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Marking
8 Packaging, transportation and storage
