T/ZYNY 007-2023 Active

Scope: This document specifies the terms and definitions, basic requirements, fertilizer classification, inspection and testing methods, determination principles, and evaluation and improvement of herbal fertilizers in TCM agricultural inputs. This document is applicable to the inspection and determination of herbal fertilizers used in TCM agricultural inputs. Main technical content: Inspection and testing items and methods. See Table 1 for details. **Table 1: Inspection and Testing Items and Methods** **Item Name** **Testing Method** **Appearance** **Visual Inspection** **Total Nutrients** GB/T 22923 - Determination of Nitrogen, Phosphorus, and Potassium in Fertilizers by Automatic Analyzer NY/T 1977 - Determination of Total Nitrogen, Phosphorus, and Potassium in Water-Soluble Fertilizers NY/T 1976 - Determination of Organic Matter in Water-Soluble Fertilizers **Microorganisms** GB/T 20287 - Determination of Microorganisms in Compound Fertilizers **Trace Elements** NY/T 1117 - Determination of Calcium, Magnesium, Sulfur, and Chlorine in Water-Soluble Fertilizers NY/T 1972 - Determination of Sodium, Selenium, and Silicon in Water-Soluble Fertilizers NY/T 1974 - Determination of Copper, Iron, Manganese, Zinc, Boron, and Molybdenum in Water-Soluble Fertilizers **Chinese Herbal Medicines** 2020 Edition of the *Chinese Pharmacopoeia* **Growth Regulators** GB/T 40460 - Determination of Plant Growth Regulators in Fertilizers by Gas Chromatography **Humic Acid** NY/T 1971 - Determination of Humic Acid in Water-Soluble Fertilizers NY/T 3162 - Determination of Fulvic Acid in Fertilizers by Volumetric Titration **Chitosan** NY/T 3175 - Determination of Chitosan in Water-Soluble Fertilizers **Heavy Metals** GB/T 23349 - Determination of Arsenic, Cadmium, Lead, Chromium, and Mercury in Fertilizers NY/T 1978 - Determination of Mercury, Arsenic, Cadmium, Lead, Chromium in Fertilizers NY/T 3161 - Determination of Arsenic