T/GZHG 007-2022 Active Group standards

T/GZHG 007-2022 Weak alkaline compound 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 007-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Chemical power sources

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: Granular product, free from mechanical impurities. 4.1.2 Weak alkaline compound fertilizers shall meet the requirements of Table 1 and comply with the values indicated on the packaging container. **Table 1: Requirements for Weak Alkaline Compound Fertilizers** **Item** **Target Value** **High Concentration** **Medium Concentration** **Low Concentration** **Total Nutrients (N + P2O5 + K2O)** (% by mass) ≥ 40.0 ≥ 30.0 ≥ 25.0 Water-soluble phosphorus as a percentage of total phosphorus ≥ 60.0 ≥ 60.0 ≥ 60.0 Water content (H2O) (b) ≤ 2.0 ≤ 2.0 ≤ 2.0 Particle size (1.00mm–4.75mm or 3.35mm–5.60mm) (c) ≥ 90 ≥ 90 ≥ 90 pH (d) Products not labeled as "chlorine-free": ≤ 3.0 Products labeled as "chlorine-containing (low chlorine)": ≤ 15.0 Products labeled as "chlorine-containing (medium chlorine)": ≤ 30.0 Nitrate nitrogen (e%) ≥ 1.5 Single trace elements (f) (in elemental form) Effective calcium ≥ 1.0 Effective magnesium ≥ 1.0 Total sulfur ≥ 2.0 Single microelements (g) (in elemental form) ≥ 0.02 **Notes:** a. The single nutrient content in the product shall not be less than 4.0%, and the absolute value of the negative 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. For products with special shapes or larger particles (except powder), the particle size can be determined by agreement between the supplier and the buyer. d. Products with a chloride ion content greater than 30.0% shall be labeled as "chlorine-containing (high chlorine)" on the packaging bag. Products labeled as "chlorine-containing (high chlorine)" may not be subject to inspection and judgment for chloride ion content. e. When the product is labeled as "containing nitrate nitrogen", this item shall be tested. f. When the produ