T/GZHG 008-2022 Active Group standards

T/GZHG 008-2022 Microcrystalline fertilizer

Publish Date: 2022-01-05 Implement Date: 2022-01-05 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/GZHG 008-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Fertilizers and pesticides

ICS Name: Chemical production

Publish Date: 2022-01-05

Implement Date: 2022-01-05

Scope

Main Technical Content: 4.1 Requirements 4.1.1 Appearance: The product shall be a powdered form, free from mechanical impurities. 4.1.2 Microcrystalline fertilizers shall comply with the requirements of Table 1 and meet the declared values on the packaging container. Table 1 Requirements for Microcrystalline Fertilizers Indicator Value Total nutrients (N + P2O5 + K2O) ≥ 40.0% Water-soluble phosphorus as a percentage of total phosphorus ≥ 85% Water content (H2O) ≤ 2.0% Fineness (passing through a 0.50mm sieve) ≥ 80% Trace elements (calculated as elemental forms) 0.2–3.0% Water-insoluble matter content ≤ 0.5% Chloride ion content ≤ 3.0% a. The single nutrient content of the product shall not be less than 4.0%, and the absolute deviation between the measured value and the declared value of a single nutrient shall not exceed 1.5%. b. Water content is an inspection item for outgoing products. c. The trace element content refers to the sum of copper, iron, manganese, zinc, boron, and molybdenum. The product shall contain at least one trace element, and the content of any single trace element not less than 0.05% shall be included in the trace element content. The molybdenum content shall not exceed 0.5%. 4.3 Dicyandiamide shall comply with the requirements agreed upon by both parties. 4.4 The limit requirements for toxic and harmful substances in fertilizers shall comply with GB38400. 5. Test Methods For the reagents, water, and solutions used in this document, unless otherwise specified, they shall be prepared in accordance with HG/T 2843. 5.1 Appearance: Determined by visual inspection. 5.2 Total nitrogen content: Determined according to GB/T 8572. 5.3 Effective phosphorus content and calculation of the percentage of water-soluble phosphorus in effective phosphorus: Determined according to GB/T 8573. 5.4 Potassium content: Determined according to GB/T 8574. 5.5 Water content: Determined according to GB/T 8