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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces NY 1107-2010 Water-soluble fertilizers containing nitrogen, phosphorus and potassium. In addition to a number of editorial changes, the following deviations have been made with respect to NY 1107-2010:
——This standard is changed from a mandatory standard to a voluntary standard;
——Appearance content requirement that "the liquid has no obvious precipitations and impurities, while the solid is divided into powder and particle, without obvious mechanical impurities.” is added;
——The division of the original product type: water-soluble macronutrient fertilizer (secondary nutrient type) and water-soluble macronutrient fertilizer (micronutrient type);
——The technical indexes of secondary nutrient and micronutrient are deleted;
——The content of macronutrient in liquid products of water-soluble macronutrient fertilizers is revised to ≥ 400g/L;
——The index of water insoluble matter content to ≤ 1.0% or ≤ 10g/L;
——The technical index with pH between 3.0 and 9.0 is deleted;
——Technical index requirements for chloridion content are increased;
——The limit of biuret content is increased in the technical index, which is ≤ 0.9%;
——The content that “if the solid macroelement water-soluble fertilizer product is in particle shape, the particle size index shall be measured and marked on the product packaging” is added;
——The content that “particle size shall be determined in accordance with those specified in NY/T 3036” is added in the test method;
——“Biuret content shall be determined according to Annex A of NY/T 2670-2020, and high-performance liquid chromatography shall be used as the arbitration method” is added in the test method. The content of sample weighing is specified;
——“Test method: the moisture content shall be determined in accordance with those specified in GB/T 8576 or GB/T 8577” is specified. "GB/T 8577 as arbitration method” is deleted;
——Technical index requirements, limited index requirements, instructions for use and precautions are added to the items specified in the product packaging label;
——The maximum inspection batch is changed to 500t;
——The indication value of sulfur content is deleted;
——Requirements for marking content is increased;
——The types and contents of secondary nutrients and micronutrients may be marked on the product packaging.
This standard was proposed by and is under the jurisdiction of the Planting Industry Management Department, Ministry of Agriculture and Rural Affairs of the People's Republic of China.
The previous editions of this standard are as follows:
——NY 1107-2006, NY 1107-2010.
Water-soluble macronutrient fertilizers
1 Scope
This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage for water-soluble macronutrient fertilizers.
This standard is applicable to liquid or solid water-soluble fertilizers produced and sold within the territory of the People's Republic of China, which are mainly composed of macronutrients such as nitrogen, phosphorus and potassium, and can be added with appropriate amount of secondary nutrients or micronutrients.
This standard is not applicable to fertilizer products with mandatory or recommended national or professional standards, such as compound fertilizer (complex fertilizer) and solid fertilizer made only by chemical methods.
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 documents (including any amendments) applies.
GB 190 Packing symbol of dangerous goods
GB/T 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/T 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
GB 18382 Fertilizer marking—Presentation and declaration
NY/T 887 Determination of the density of liquid fertilizers
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 1117 Water-soluble fertilizers—Determination of calcium, magnesium, sulphur and chlorine content
NY/T 1972 Water-soluble fertilizers—Determination of sodium, Selenium, silicon content
NY/T 1973 Water-soluble fertilizers—Determination of water insoluble matter content and pH
NY/T 1974 Water-soluble fertilizers—Determination of copper, iron, manganese, zinc, boron, molybdenum content
NY/T 1977 Water-soluble fertilizers—Determination of total nitrogen, phosphorus and potassium content
NY/T 1978 Fertilizers—Determination of mercury, arsenic, cadmium, lead and chromium content
NY/T 1979 Fertilizers and soil amendments—Regulations of label and specification assessment
NY/T 2670-2020 Urea ammonium nitrate solution and code of agricultural practice
NY/T 3036 Fertilizers and soil amendments—Determination of moisture content and particle sizes
Measures for the metrological supervision and administration of quantitatively packed commodities
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
water-soluble fertilizers
liquid or solid fertilizers which are dissolved or diluted by water for fertigation, foliar fertilization, soilless culture, seed soaking and root dipping, etc.
4 Requirements
4.1 Appearance: uniform liquid or solid. The liquid has no obvious precipitations and impurities, while the solid is divided into powder and particle, without obvious mechanical impurities.
4.2 The technical indexes of solid and liquid products of water-soluble macronutrient fertilizers shall meet the requirements of Table 1 and the indication values of packaging marks.
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Table 1 Requirements of water-soluble macronutrient fertilizers
Item Solid products Liquid products
Macronutrient content a ≥50.0% ≥400g/L
Water insoluble matter content ≤1.0% ≤10g/L
Water (H2O) content ≤3.0% /
Biuret content ≤0.9%
Chloridion content b Products not labeled as "chlorine-containing” ≤3.0% ≤30g/L
Products labeled as "chlorine-containing (low)” ≤15.0% ≤150g/L
Products labeled as "chlorine-containing (medium)" ≤30.0% ≤300g/L
a The content of macronutrients refers to the total N, P2O5, K2O. The product shall contain at least two of the macronutrients. The content of single macronutrient is not less than 4.0% or 40g/L. The absolute value of negative deviation between the measured value and the indication value of each single macronutrients shall not be greater than 1.5% or 15g/L.
b Products with chloridion content greater than 30.0% or 300g/L shall be marked with "chlorine-containing (high)" on the packaging bag, and the chloridion content of products with "chlorine-containing (high)" may not be tested and judged.
4.3 The limit indexes of mercury, arsenic, cadmium, lead and chromium in water-soluble macronutrient fertilizers shall meet the requirements of NY 1110.
4.4 If secondary nutrients are added to the product, the content of single secondary nutrient and the total content of secondary nutrient contained in the product shall be indicated on the packaging label.
——Secondary nutrient content refers to the sum of calcium and magnesium nutrients. The product shall contain at least one secondary nutrient.
——The content of single secondary nutrient shall not be less than 0.1% or 1g/L.
——If the content of single secondary nutrient is lower than 0.1% or 1g/L, it shall not be included in the total content of secondary nutrient.
——If the indication value of single secondary nutrient is not greater than 2.0% or 20g/L, the absolute value of the negative relative deviation between the measured value and the indication value shall not be greater than 40%; if the indication value of single secondary nutrient is greater than 2.0% or 20g/L, the absolute value of the negative deviation between the measured value and the indication value shall not be greater than 1.0% or 10g/L.
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4.5 If micronutrients are added to the product, the content of single micronutrient and the total content of micronutrient contained in the product shall be indicated on the packaging label.
——Micronutrient content refers to the sum of copper, iron, manganese, zinc, boron and molybdenum. The product shall contain at least one micronutrient.
——The content of single micronutrient shall not be less than 0.05% or 0.5g/L. The content of molybdenum is less than 0.5% or 5g/L.
——If the content of single micronutrient is lower than 0.05% or 0.5g/L, it shall not be included in the total content of micronutrient.
If the indication value of single micronutrient is not greater than 2.0% or 20g/L, the absolute value of the positive and negative relative deviation between the measured value of each nutrient and its indication value shall not be greater than 40%; if the indication value of single micronutrient is greater than 2.0% or 20g/L, the absolute value of the positive and negative deviation between the measured value of each nutrient and its indication value shall not be greater than 1.0% or 10g/L.
4.6 If the solid water-soluble macronutrient fertilizer product is in particle shape, the particle size (1.00mm-4.75mm or 3.35mm-5.60mm) shall be ≥ 90%; particle size of products with special shape or larger particles (except powder) may be determined by agreement between the supplier and the purchaser.
5 Test methods
5.1 Appearance
It shall be determined by visual inspection.
5.2 Determination of total nitrogen content
It shall be determined in accordance with those specified in NY/T 1977.
5.3 Determination of phosphorus content
It shall be determined in accordance with those specified in NY/T 1977.
5.4 Determination of potassium content
It shall be determined in accordance with those specified in NY/T 1977.
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
